12 best fire alarms

Product description

Promote greater household safety with the First Alert 9120B Hardwired Smoke Alarm with Battery Backup. This 120 volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires and alerts you with a loud 85 decibel alarm. Designed to be wired directly into your home's electrical system, this hardwired smoke detector features a backup battery that helps keep the alarm functioning even in the event of a power outage. The gasket less mount helps ensure a perfect alignment for easy installation, while tamper resistant locking pins keep the alarm secure. And thanks to the convenient test/silence button, you can easily check whether the alarm is functioning properly and mute false alarms. This smoke alarm can integrate with up to 12 other First Alert or BRK hardwired alarms and features a latching indicator that identifies which unit triggered the alarm.

Introducing the revolutionary BRK 9120 series smoke alarms which have been redesigned from the ground up. They install faster, perform better, and are even smarter than before. All of these improvements help reduce nuisance alarms and save you time and money. BRK Electronics smoke alarms are designed to be easy to install, easy to maintain, and quality-engineered for years of virtually maintenance-free service.

The 9120B AC-powered smoke alarm with battery backup includes these features:

• Ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly.
• 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm.
• Latching alarm indicator which automatically identifies which unit initiated the alarm.
• Smart technology to reduce nuisance alarms.
• 9-volt battery backup for peace of mind during power malfunction.
• Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality.
• Perfect mount system including a gasketless base for easy installation and new mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment.
• Mounting bracket lock for tamper resistance.
• Dust cover to keep unit clean during construction.
• 10-year limited warranty.

All BRK Electronics smoke alarms meet UL 217 standard and are listed with the California State Fire Marshal. They use the new UL mandated repeating 85-decibel alarm horn pattern. 10-year limited warranty. This unit is approved for sale in Oregon after new revisions on law HB2586.--Bree Norlander

What's in the Box

One smoke alarm, one 9-volt battery, and user's manual

From the Manufacturer

The revolutionary BRK 9120 series smoke alarms have been redesigned from the ground up. They install faster, perform better, and are even smarter than before. All of these improvements help reduce nuisance alarms and save time and money. BRK Electronics’ smoke alarms are designed to be easy to install, easy to maintain, and quality-engineered for years of virtually maintenance-free service. The 9120B includes an ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly and is 120-volt AC inter-connectable (with maximum 18 compatible devices), which lets the alarm be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters, and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm and a latching alarm indicator automatically identifies which unit initiated the alarm. This is smart technology to reduce nuisance alarms. It also has a 9-volt battery backup for peace of mind during power malfunction, a single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality, a perfect mount system, including a gasket less base for easy installation and new mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment, and a mounting bracket lock for tamper resistance. A dust cover keeps the unit clean during construction. It comes with a 10-year limited warranty.

• Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure
• Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm
• To ensure complete protection make sure to place one on each level of your home and in each bedroom
• Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected
• Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy
• Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage
• First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

User questions & answers

Question:	My entire home is equipped with BRK smoke detector (4120 B) and Carbon Monox Det (CO50120B). They need replacing. Will new BRK fit extant casings
Answer:	Yes all the wired Nest Protect needs is the 120V hot (black) and neutral (white) wires in the electrical box connected to the plug-in pigtail that comes with the Protect. If your house has multiple detectors now you will usually also find a red wire in the electrical box that interconnects your old detectors so that if one goes off they all sound. That wire is no longer needed with the Protect so you just cap it with a wire nut.
Question:	can these be connected together so if one is set off they all go off
Answer:	Yes, but only if you are connected to the internet and then only for the last ten days, and only if the level rises above the heads up level (which is 70ppm and rising for around an hour or a shorter period if over 150ppm). To counter what someone else's answer was - Carbon monoxide does NOT sink. It is in fact lighter than air (CO has an atomic weight of 28 versus Nitrogen (N2) which is also 28 - but marginally heavier (by 0.003 amu due to heavier isotopes), Oxygen (O2) which is 32 and Argon which is 40. However the weight is similar enough in the air in your house that it tends to distribute as a fluid and is measurable anywhere in a room; it really depends upon how air moves through the space. The levels tend to fluctuate rapidly as CO distributes and any outside air mixes in and additional CO is added. Overall, there is no perfect way to measure the CO levels with one device in one place, but this is as good as most people need.
Question:	How does the Alarm Latch feature "easily identify initiating alarm"? This is major problem with false alarms on my existing Kidde/Firex dual alarms
Answer:	I just checked this for you. I unplugged my wifi router and started a test. All detectors alarmed as expected. So, yes, the system works even without active wifi.
Question:	Can a BRK Model 92120B smoke detector directly plug in and replace an old BRK Model 4120B smoke detector (without an adapter
Answer:	I think very few here understand the question. National code requires interconnected smoke detectors as of 2004, there is an extra wire in the circuit and all smoke detectors are on that wire for 'signal'. When one alarms they should ALL alarm. If I am reading the answers correctly, NEST does not comply with the signal wire. However, it looks like it does set up its own wireless network to act like they are all interconnected. To be honest, after paying for the extra wire behind the wall, why would I want to by 6-8 nests at $100 each when the originals are 20-30 each? This way there is one smart point to notify if any detector is going off. Nests way 6-9 smoke detectors, 6-8 login, 6-8 ip address. Ugh, what a nightmare!

Product features

Smoke Alarms

Place at least 10 feet from kitchen/stove, and on the ceiling or high on a wall, no more than 10 inches from top.

Carbon Monoxide Alarms

Carbon monoxide alarms can be placed anywhere, not just the ceiling or high on a wall. They should be replaced every 5 to 7 years.

Fire Extinguishers

Keep in the kitchen and garage, but make sure to have the right grade for the type of fire that might occur.

Escape Ladders

Have at least one if your home has more than one story. Each room needs 2 escape routes; in most bedrooms it's the window, so have a ladder nearby.

Product description

The First Alert SCO5CN Combination Smoke and Carbon Monoxide Alarm features dual sensors to detect both smoke and carbon monoxide in a single device. A photoelectric sensor detects the smoke most often produced by smoldering fires, and minimizes false alarms from cooking smoke or shower steam. Additionally, the advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel burning appliances, blocked chimneys, and generators running inside or too close to homes. A loud, 85 decibel siren alerts you to the threat; unique alarm sounds and indicator lights on its face distinguish a smoke warning from a carbon monoxide warning. This carbon monoxide and smoke detector is battery operated, so you don't need an electrician for installation. Requiring just two AA batteries and featuring an easy access battery compartment for quick changes, this smoke and carbon monoxide detector has a single button that allows you to silence a false alarm or test the unit.

Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air.

The First Alert SCO5CN carbon monoxide and smoke alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. The alarm uses photoelectric smoke sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. The permanent sensors last the lifetime of the alarm. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. A low battery signal alerts you to replace the battery and end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 5-year limited warranty. UL listed. Not available for sale in Massachusetts.--Bree Norlander

What's in the Box

One combination carbon monoxide and smoke alarm, two AA batteries, and user's manual. This does not contain voice feature.

• Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
• Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
• Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
• Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours
• Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling
• 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards
• It can ship within the US except New York
• First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

User questions & answers

Question:	pack is $30, 2 pack is $90. Why is a two pack so much? I thought the idea was to incentivize more product at a lower cost. This is halarious
Answer:	I no longer live in the apartment where I replaced the old smoke alarm, but you will love this one. It's so nice to flip the battery holder down and not have to remove the battery from the unit.
Question:	Advice on false alarms? Goes off every week or so. It's in our kitchen/living room, but goes off even when we are not cooking. Goes 1 min then stops
Answer:	No
Question:	I have these througout my house and rental unit. Installed them about 7 years ago and many malfunctioning. Any durability mprovments since 7 yrs ago
Answer:	The instructions that come with the unit duplicate what I have read from several Fire Department sources: you can place your unit on the ceiling, but AT LEAST 4 inches (10cm) from the wall. If you want to mount it on the wall, mount it MORE THAN 4 inches (10cm) BELOW the ceiling, but NO LOWER than12 inches (30cm) below the ceiling. It has to be high enough up the wall to "smell" the smoke, but that 4 x 4 inch (10cm x 10cm) area where the wall meets the ceiling can sometimes harbor a "dead zone" of still air where the smoke would NOT reach the detector quickly enough during a fire to warn you in time. Thus, do NOT mount your detectors too close to where the wall meets the ceiling.
Question:	How long do batteries last
Answer:	Ionization type. I actually looked at at manual to be certain.

Product description

Complete Home Protection

According to US data analysis, a family fire begins every 38 seconds. The faster you know about the fire, the sooner you start moving your family, and the smoke alarm at work reduces the risk of home fire deaths by 50%.

Advantage

1.The smoke alarm with test button allows you to test the unit's functionality. 

2.It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. 

3.The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power.

4.The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. 

5.It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs.

Attention1.The Smoke Detector contains the test button.Flickering power indicator,When the red LED light flashes for 32 seconds, it indicates that the smoke alarm is running normally.

2.When the alarm senses products of combustion and goes into alarm, the red LED will flash rapidly (one flash per second)..The rapid flashing LED and pulsating alarm will continue until the air is cleared or the test button is released.

Specifications: 

1.DC 9V battery operated 

2.Photoelectric chamber for early detection from all directions 

3.Loud>85dB (A) alarm signal @3M 

4.Flash alarm indicator (red LED). 

5.Test button for easy recommended monthly testing

6.Low battery signal 

7.Safety clip feature, does not allow mounting of smoke alarm without battery installed

8.Ceiling mounting 

9.Easy to install with mounting bracket 

10.5 years prodcut life time

• Photoelectric Smoke Alarm Sensing Technology: A faster sensing technology at detecting the dangerous situation than ionisation alarms, red LED will flash and the alarm pattern will sound, Loud 85 decibel alarm with compensation design.
• Battery-Powered Smoke and Fire Alarm Detector: no wire needed，not Hardwired
• Test/Slience Button: Tests the unit for proper operation and resets the carbon monoxide alarm,Alarm Volume: Loud > 85dB(A) at 1 meters.Loud 85-decibel alarm is designed to be heard easily.Pls kindly press if false alarm.
• Easy Install and Use: The alarm can easily install with mounting bracket.No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
• Safety and 5 year life: .Low battery signal lalarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm.If any problem,contact with us without hesitable,we will reply to you asap.

User questions & answers

Question:	what color is this
Answer:	Just a little off white. Doesn't glare. Goes well on my ceiling-white ceiling, but it's not that white.
Question:	Will a candle in the room set off these alarms
Answer:	No
Question:	Do they go off together when go off
Answer:	NO THEY ARE BATTERY OPERATED
Question:	do you have restrictions sending the product to California
Answer:	I just tried to order them but they won't ship to California.

Product description

Battery powered smoke alarm with mute feature silences nuisance alarms from cooking smoke or shower steam. Single button also tests alarm functions. Easy access battery drawer: No need to remove alarm from ceiling to change battery. 10-year limited warranty. Meets UL standards. Optional theft-prevention lock when activated, batteries and/or alarm cannot be removed without proper tools.

Working smoke alarms cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you know about a fire, the faster you can start moving your family outside. The First Alert smoke alarm with silence button allows you to both silence a non-threatening alarm and to test the unit's functionality. It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power. The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs. It includes one 9-volt battery and has a 10-year limited warranty. UL listed for safety.Bree Norlander: what's in the Box: One smoke alarm, user's manual, and one 9-volt battery

From the Manufacturer

Working smoke alarms cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you know about a fire, the faster you can start moving your family outside. The First Alert smoke alarm with silence button allows you to both silence a non-threatening alarm and to test the unit's functionality. It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power. The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs. UL listed for safety

• Help keep your family safe with this battery powered smoke alarm featuring an ionization sensor for smoke detection; a loud 85 decibel alarm sounds when smoke levels are elevated
• Ionization sensor is effective in recognizing smoke from flaming fires such as paper and grease fires
• Battery operated alarm unit provides continuous monitoring even if there's a power failure; Plus, it's easy to install
• Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard
• To ensure complete protection make sure to place one on each level of your home and in each bedroom
• It can ship within the US except New York
• First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

User questions & answers

Question:	What is the dimension of the outside ring? I'm replacing old ones and want to cover the spot where the old one is
Answer:	there is no recall on this unit.
Question:	Does this alarm warn for carbon monoxide too
Answer:	That really depends on the battery. However it is recommended by the manufacturer and fire departments to change the battery on any smoke detector once a year.
Question:	I recently purchased three of these smoke alarms from Amazon. Can you tell me how high
Answer:	CA SB745 "SEC. 21. Section 13114 of the Health and Safety Code is amended to read: 13114. (a) The State Fire Marshal, with the advice of the State Board of Fire Services, shall adopt regulations and standards as he or she may determine to be necessary to control the quality and installation of fire alarm systems and fire alarm devices marketed, distributed, offered for sale, or sold in this state. (b) (1) No person shall market, distribute, offer for sale, or sell any fire alarm system or fire alarm device in this state unless the system or device has been approved and listed by the State Fire Marshal. (2) (A) Except as provided in subparagraph (B), commencing July 1, 2014, in order to be approved and listed by the State Fire Marshal, a smoke alarm that is only operated by a battery shall contain a nonreplaceable, nonremovable battery that is capable of powering the smoke alarm for at least 10 years. (B) This paragraph shall not apply to smoke alarms that have been ordered by, or are in the inventory of, an owner, managing agent, contractor, wholesaler, or retailer on or before July 1, 2014, until July 1, 2015. (3) Commencing January 1, 2015, in order to be approved and listed by the State Fire Marshal, a smoke alarm shall display the date of manufacture on the device, provide a place on the device where the date of installation can be written, and incorporate a hush feature. (4) The State Fire Marshal shall have the authority to create exceptions to paragraphs (2) and (3) through its regulatory process. The exceptions that may be considered as part of the regulatory process shall include, but are not limited to, fire alarm systems with smoke detectors, fire alarm devices that connect to a panel, or other devices that use a low-power radio frequency wireless communication signal. (5) The State Fire Marshal shall approve the manufacturer’s instructions for each smoke alarm and shall ensure that the instructions are consistent with current building standard requirements for the location and placement of smoke alarms."
Question:	Is this detector a photoelectric or ionization type
Answer:	Yes

Product features

Smoke Alarms

Place at least 10 feet from kitchen/stove, and on the ceiling or high on a wall, no more than 10 inches from top.

Carbon Monoxide Alarms

Carbon monoxide alarms can be placed anywhere, not just the ceiling or high on a wall. They should be replaced every 5 to 7 years.

Fire Extinguishers

Keep in the kitchen and garage, but make sure to have the right grade for the type of fire that might occur.

Escape Ladders

Have at least one if your home has more than one story. Each room needs 2 escape routes; in most bedrooms it's the window, so have a ladder nearby.

Product description

The BRK SC9120B hardwire combination smoke and carbon monoxide alarm detects two hazards with one simple unit. Carbon monoxide (CO) is a colorless, odorless, deadly gas. It can be emitted by sources including gas or oil furnaces, gas clothes dryers, water heaters, fireplaces, wood stoves, charcoal grills, gas ranges, and space heaters. A clogged chimney, improper venting, and attached garages can also cause carbon monoxide accumulation. The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features: Quick plug in power connector for easy installation, 120 volt AC inter connectable (with maximum 18 compatible devices 12 other compatible smoke alarms + 6 compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. Automatically performs internal test of functionality. Latching alarm indicator which automatically identifies which unit initiated the alarm. Battery drawer lock and mounting bracket lock for tamper resistance. AC power indicator and alarm indicator light. Low battery warning "chirp" and missing battery tab. 9 volt battery backup for peace of mind during power outages. All BRK Electronics carbon monoxide alarms are listed to UL Safety Standard 2034 for residential carbon monoxide alarms. Includes 9 volt backup battery. 7 year limited warranty. Includes: One combination smoke and CO alarm, one 9 volt battery, and user’s manual.

• Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure
• Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection.
• Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
• Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected
• Simple to use, with a single test/silence button, and side load battery compartment; Tamper resistant locking brackets and universal mounting brackets make installation easy
• Rigorously tested to meet UL standards
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
• First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

User questions & answers

Question:	What is the manufacture date on these items
Answer:	Hello. Yes, but not the way you mean. When the alarms go off, there is always one alarm going off and setting off all of the others. This alarm will have a green light flashing every second as well as the red light. You have to identify that alarm and either put it in HUSH mode or unplug it and take it down to stop the others. This is intentional so that if you are not leaving the house then you are identifying and investigating where the smoke situation is and if there is danger. The HUSH mode will make the alarm require more smoke to go off and for a small amount of smoke will stop it for about 8 minutes If there is too much smoke, the HUSH mode will not stop the alarm for going off.
Question:	If the alarm goes off, how can you tell whether it's due to CO or fire if there is no voice alert
Answer:	Hello. Yes, this alarm comes with a wiring harness connector.
Question:	Because its a combo alarm where is the best place to install it since smoke rises and carbon monoxide doesn't
Answer:	Hello. The answer is no, the battery is only a temporary back up. If you want an alarm that is battery only, you will want our KN-COPE-D.
Question:	Why does this model contain the radioactive part? I am sure you are going to tell me that it is a trace amount and that it has all approvals
Answer:	Hello. When plugged in AC power, it is supposed to have a solid green LED light. When running on battery alone, it should have a green light that flickers every 60 seconds. If this is not what is happening, call us when you are on location with a ladder at 1-800-880-6788 so we can figure out what is going on and how we can resolve this.
Question:	When these are interconnected with other units, can hushing one of them hush all of them? Some of mine are in places that are hard to get to
Answer:	I paid FOR for 6 and only got 4. It’s listed as 6. I had to buy two more from Home Depot. DO NOT BUY THIS ITEM.
Question:	does it come with the hardwire connector
Answer:	Does not connect to hard wire. Only battery
Question:	Do you have to hardwire it in? Can it run on just the battery
Answer:	I just checked 2 of them, and am unable to locate that information.
Question:	How do you tell if it is working properly. Is it supposed to have a constant light
Answer:	The back cover comes off install battery and replace

Product features

Always Alert

In order to monitor your home even if you are away, this detector includes an Alarm Memory feature. If the green LED is blinking once every 16 seconds, the unit has detected CO levels of 100PPM or higher, or detected smoke and then ceased its alarm. Pressing the Test/Reset will reset the memory and inform you of the hazard detected.

Easy to Install

Ensure the safety of your family and home with the combination smoke and carbon monoxide alarm from Kidde. This is a hardwired alarm that can be used in an interconnected system, and it features a battery backup, in addition to voice alerts. Using an advanced photoelectric sensor, capable of detecting visible fire particles associated with smoldering fires, and an electrochemical sensor for CO detection, you can rest easy and feel protected.

Easy Access

If the low battery warning sounds, there is a convenient front-loading battery door so that you don’t have to remove the alarm from its mounting bracket to replace the alarm. Additionally, to ensure that there is always a properly functioning battery, the battery compartment will not close if the battery is not installed correctly.

Product description

Kidde 21026043 battery-operated (not hardwired) combination smoke/carbon monoxide alarm with voice warning KN-COSM-BA. Interconnects - No.

• Voice Alarm – Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning, Carbon Monoxide” when a CO hazard is detected
• Combined Carbon Monoxide and Smoke Alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home decor attractive.
• Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
• Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in the technical specification for manual.
• Voice Announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100 ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the Test/ Reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts): 4.5

User questions & answers

Question:	How frequently do we need to change the batteries
Answer:	They don’t connect or require wiring, place them wherever needed
Question:	Can this unit be used to replace the hard wired smoke detector in my home
Answer:	I received the energizer E522 max 9 V new batteries
Question:	Need to replace a kn-cosm-b. is the mount the same on the much newer kn-cosm-ba
Answer:	I don't understand your question. All batteries will burn if you put them in a fire.
Question:	Does the smoke detector have both photoelectric and ionization sensors
Answer:	Malaysia

Product features

Easy Access Front-loading Battery Door

Easily replace the 2 AA batteries without disconnecting from mounting bracket. This alarm model also includes a safety feature in the battery safeguard – The battery door will not close unless the batteries are properly installed.

Giving You Peace Of Mind

There’s nothing more important than keeping your family and home safe, and when fires are a very common type of emergency a homeowner can face, you want to be prepared. The Kidde KN-COSM-BA combination Fire Detector and Carbon Monoxide Detector pairs two life saving devices into one unit. It uses an ionization sensor and electrochemical sensor to monitor your home for potential hazards, so you will always feel safe and confident.

Comprehensive Alerts

Voice alarms along with chirps indicate the hazard that has been detected for fast response. Alarms include:

> Fire: The red LED will flash along with three long beeps, followed by the message “Fire!”

> Carbon Monoxide: Four short beeps followed by the message “Warning! Carbon Monoxide!”

• Battery-Powered Smoke and Fire Alarm Detector, no wire needed，not Hardwired
• Environment friendly, without smell, radiation or harm
• Photoelectric Smoke Alarm Sensing Technology:A faster sensing technology at detecting the dangerous situation than ionisation alarms, red LED will flash and the alarm pattern will sound, Loud 85 decibel alarm. MCU Intelligent design with Microprocessor(MCU with software in it), Automatic adjustment and compensation design.
• Wide Range of Applications: ABS material is heat-resistant and high-temperature resistant, and does not contain radioactive substances that are harmful to the environment.Smoke alarms are suitable for all occasions, including bedrooms, kitchens, corridors, bathrooms, hotels, offices, etc.Of course you can also put it in your grocery room or in the parking lot. Let you and your family get more care.
• GUARANTEED QUALITY:100% Satisfaction Guarantee...or your money back!

User questions & answers

Question:	I ordered the 4 pack and 3 of them worked fine. One would just make a slight sound when tested. I would just like to have the one replaced. Not sure h
Answer:	Good morning! At this time, there is no adapter for this model to make it switchable. Sorry.Spray Foam Systems
Question:	can this model be interconnected
Answer:	the one 3m recommended to me was M Multi Gas/Vapor Cartridge/Filter 60926, P100 Respiratory Protection (Pack of 2 individual cartridges)
Question:	Can these be battery and hard wired
Answer:	Probably ok for fallout. It depends more on the filter than the mask, as with fallout you're essentially performing dust protection for very very fine particulate. A P100 filter (~$10 per set) is the best consumer protection you can buy from 3M, and it could very well do the job.
Question:	Are there 2 detectors in this offer
Answer:	I used the website below that was extremely informative for sizes. The mask is the same size and has adjustable straps for all head sizes. The sizing differences of small, medium & large have to do with the inside rubber seal the goes around your face (cheeks, chin, forehead). There is a 3M mask fit test kit but it costs $240 from 3M. 80% of people fit the Medium size. 5% small and 15% large. The website below offers a visual comparison of how the gaskets differ in size. Find information about the mask and size here: https://www.envirosafetyproducts.com/resources/respirators-choosing-the-size.html

Product features

PHOTOELECTRIC SMOKE ALARM IS FAR MORE SENSITIVE AND EFFECTIVE THAN IONIZATION SMOKE ALARM

• How does Photoelectric Smoke alarm works?

1. Inside the smoke alarm, there is a LED light that sends a beam of light (similar to a laser pointer) in a separate compartment inside the chamber, there is a photosensor that detects light.
2. As smoke enters the detector, the smoke particles interrupt the light beam, scattering it in many directions. Some of the LED light scatters toward the light sensor. When light beams hit the sensor, the alarm will go off!
3. When the batteries in your smoke alarm get low, the smoke alarm automatically activates a low battery chirping sound different from the alarm sound so you know it's time to get new batteries.

• Photoelectric sensors are set off when smoke enters the alarm and deflects the light of an LED beam onto a photocell.
• For slow, smoky, smoldering fires, photoelectric alarms are far more sensitive and effective.
• Choose a photoelectric model as our primary choice, killing the fire at the begining.

Installation Notes：

1. Turn the alarm body counterclockwise and take off the bracket.

2. Hold the bracket in the installation position as specified in the Recommended Locations, mark installation holes of the bracket with a pencil.

3. Drill the two marked installation holes with a 3/16 inch (5mm) drill bit. Tap the two plastic grommets into holes with a hammer.

4. Mount the bracket to the ceiling by inserting and tightening the supplied screws into plastic grommets.

5. Connect the battery to the power connector.

6. Fix the battery into the battery box.

7. Fit the alarm on the bracket and turn the alarm body clockwise, until fully inserted into the bracket.

Everyone and home all need it ! save you lives !!!

• Home fire starts every 83 seconds! That's why we need a smoke alarm? Photoelectric sensor smoke alarm to kill the fire at the beginning.
• Widely Used:The Photoelectric Smoke and Fire Alarm is applicable to Company, Factory, Hospital,Shopping Mall, Hotel, School, Housing,Warehouse,Etc

• HIGHER SECURITY & COMPACT SIZE: Featuring an upgraded smoke sensor with the latest in photoelectric technology, this smoke alarm responds to hazardous smoke quicker than traditional alarms with an over 85 dB loud alarm and a rapid flashing LED indicator, giving you extra time to control the fire or safely escape
• 10-YEAR BATTERY LIFE: The 10-year battery-operated fire alarm reduces the trouble of frequent battery replacement; keeps your family safe by providing reliable 24/7 uninterrupted protection, allowing you to sleep safe and sound
• EASY TO INSTALL: This mini smoke alarm has a diameter of only 3.1 in, so it can be unobtrusively installed anywhere easily; effortlessly mount it onto any wall or ceiling using the included screws and anchor plugs
• SELF-CHECK & SILENCE FUNCTIONS: Equipped with a low-battery warning, so you know when it’s time to replace the unit for safety; if non-emergency smoke (e.g., cooking fumes) causes nuisance alerts, you can easily silence them by pressing the test/silence button
• EASY INSTALLATION WITH GUARANTEED QUALITY: Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; we provide a 60-day money-back guarantee and a 5-year warranty

User questions & answers

Question:	Are the mounting holes the same for this mini as they are for standard size detectors? In other words, can I mount this mini in the same holes
Answer:	Yes it does. We use it for everything. It’s a staple in our house. We joke about making holsters for the bottles, lol.
Question:	Are these interconnected? Like if one goes off in my basement, will one in my upper level be triggered to go off at the same time
Answer:	Sure. All purpose. Love this stuff
Question:	Are these UL approved
Answer:	Our Windex® Vinegar does not contain ammonia.
Question:	Will this still work if it’s on a shelf close to the ceiling but not actually mounted on the ceiling
Answer:	This product contains Acetic Acid which is one of the main component of vinegar apart from water. For a full list of ingredients, please use this link: http://whatsinsidescjohnson.com/us/en/brands/windex/windex-multi-surface-vinegar.

Product features

Technical Specifications

Sensor Type: Photoelectric

Battery Life: Up to 10 years

Detection Range: 20-40 m²

Dimensions: Ø 78 × 48 mm

Material: Polystyrene plastic

Alarm Noise Level: ≥85 dB at 3 m

Power Supply: Sealed lithium battery

• 10-Year Battery & 10-Year Sensor: This smoke and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety
• Practical LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm; if a CO concentration of 30-999 ppm exists for a certain time period, the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds
• 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
• Simple to Use: Test/Silence button enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will sound throughout your entire home, instantly alerting the entire household, even those in sleep
• Quick & Easy Installation with Guaranteed Quality: Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product

Product features

When the LED indicator flashes RED, an alarm will sound, indicating one of the following four modes:

1. Smoke Alarm Mode: flashes red with 3 long beeps every 1.5 seconds.
2. CO Alarm Mode: flashes red with 4 quick beeps (every 5.8 seconds for the first 4 minutes, and every 60 seconds after 4 minutes).
3. Test Mode: flashes red with 2 sets of 3 long beeps, followed by 2 sets of 4 quick beeps.
4. Silence Mode: flashes red once every 5 seconds (no beeps).

When the LED indicator flashes YELLOW, it is important to check the working status of the alarm. There are three possible scenarios:

1. Low Battery Warning: flashes yellow with 1 beep every 60 seconds.
2. Smoke Malfunction Warning: flashes yellow 1 or 2 times with 2 beeps every 40 seconds.
3. CO Malfunction Warning: flashes yellow 3 or 4 times with 2 beeps every 40 seconds.

The LED indicator flashes GREEN to indicate the following three working modes (no beeps):

1. Standby Mode: flashes green once every 60 seconds.
2. Exiting Alarm Mode: flashes green once per second for 5 seconds.
3. Exiting Silence Mode: flashes green 3 times.

Practical LCD Display

• The display will indicate real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm.
• If a CO concentration of 30-999 ppm exists for a certain time period,the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds.

Technical Specifications

Power Supply: 10-year sealed lithium battery

Smoke Sensor Type: Photoelectric

CO Sensor Type: Electrochemical

Product Life: About 10 years

Safety Standards: UL 217 & UL 2034

Alarm Noise Level: 85 dB at 9.84 ft (3 m)

• Combo smoke detector/carbon monoxide alarm detects two threats
• Electrochemical CO sensor alerts you to carbon monoxide danger
• Photoelectric sensor detects smoke while minimizing false alarms
• Battery-operated unit installs quickly and easily without an electrician，A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
• 5 YEARS WARRANTY

User questions & answers

Question:	I cannot get power light to illuminate. Had smoke fill kitchen from pellet stove with no alarm from either device. Any tips
Answer:	Yes. VdS, TÜV Rheinland, BSI, ETL, and CCCF. UL 2034 (US) and EN 50291 (EU)
Question:	How does it show real time carbon monoxide levels and what not if the lcd screen does not stay on? Maybe I got a defective one
Answer:	Stairwell
Question:	Do theses need to be replaced in 5 years? it says 5 year warrnty some sy 7 some say 10yrs. what is the reccomendation on these
Answer:	Not thus far.
Question:	I cannot get power light to illuminate. Had smoke fill kitchen from pellet stove with no alarm from either device. Any tips
Answer:	Hello Bob, it's the Alorva team here. We do not provide moisture reduction packets, however, if you feel you need that added protection from moisture, feel free to do so. Some customers are constantly adding and taking out documents from their bags all the time and this airflow that is introduced is sufficient to keep moisture to non-existent levels. Thanks and have a Merry Xmas, The Alorva team.

Product features

Alerts You to Danger

When a threat is detected, the smoke and carbon monoxide alarm sounds a loud 85-decibel siren that is designed to wake even the soundest of sleepers.

A single button allows you to silence alarms and test if the device is working.

Battery Operated for Convenience

The battery-operated dual CO smoke alarm installs in minutes, without requiring an electrician. The unit requires two 1.5V AA battery and features a chirp and indicator light to let you know when they need replacing. The alarm mounts easily to a ceiling or wall and comes with pins to secure alarm to the base to prevent tampering.

Sleek, Low-Profile Design

Half as thick as a standard alarm, the Photoelectric Smoke and Carbon Monoxide Alarm packs premium detection features into a sleek, compact unit. The ultra-thin design features a white finish that blends seamlessly with most home decor.

• Know from Anywhere: When one alarm is triggered, all interlinked smoke alarms will sound, so you and your family can hear the alarm from anywhere in your home; an intelligent locating function allows you to quickly locate the source of the fire, giving you every extra life-saving second to control the fire or evacuate
• Wide Coverage for Full Home Protection: Featuring a relay function that extends transmission range, this radio-interlinked alarm can be interconnected with up to 24 smoke alarms to create a smart home network with no blind spots, even on different floors or in the basement and garage
• Easy to Install, Interconnect, and Operate: This mini smoke alarm can be quickly installed onto any wall or ceiling without hardwiring; simply press the test/silence button to interconnect your wireless smoke alarms (the alarms in one multi-pack have already been interconnected); easy to test the alarm regularly or silence false alarms (e.g., cooking fumes) with a simple push
• 5-Year Replaceable Battery & Self-Check: The battery supports 5-year continuous use and can be easily replaced by yourself; a low-battery warning lets you know when it’s time to replace the battery
• Worry-Free After-Sales Services: All X-Sense smoke alarms come with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support with one working day; clear, easy-to-follow instructions are included for convenience; feel free to contact us if you have any questions.

Product features

Smarter Wireless Interconnection

Upgraded with advanced wireless interconnection technology, this smoke alarm uses radio frequency (RF) signals to communicate with up to 24 alarms. When one alarm is triggered, all alarms will sound. This allows you to hear an alarm from anywhere in your home, regardless of where the fire hazard starts, ensuring the safety of your entire home.

5-Year Replaceable Battery with Low Battery Warning

The wireless alarm utilizes a replaceable 3 V battery that supports up to 5 years of continuous monitoring. A self-check function issues a low battery warning - the red LED flashes once with one beep every 60 seconds - to inform you it’s time to replace the batteries, ensuring uninterrupted protection for enhanced safety.

Quickly Locate the Source Alarm

Only the originating unit can silence all interconnected alarms. Press the test/silence button on any interconnected alarm. If all alarms are muted, the smoke alarm you pressed is the source alarm. If one smoke alarm is still sounding, that alarm is the source alarm. This allows you to easily locate the source alarm, ensuring an immediate respond to fire.

How to Turn On

Power on by removing the battery insulating film from the battery compartment.

How to Interconnect

Press the test/silence button on one alarm 4 times. This alarm will beep once and the red LED will flash continuously. It will beep once more after successful interconnection. To interconnect a third smoke alarm, power it on, and press the test/silence button 4 times. Make sure to only have one smoke alarm in the interconnecting mode at a time. You can add up to 24 X-Sense wireless alarms in this manner.

How to Silence

Press the test/silence button during an alarm state, and the alarm will enter silence mode for 9 minutes. During the silence mode, the red LED will flash once every 5 seconds. The alarm will enter normal mode after 9 minutes.

How to Test All Interconnected Smoke Alarms

Hold down the test/silence button on a smoke alarm. This alarm will beep continuously with the red LED flashing. After 5 seconds, all other interconnected alarms follow suit. Release to stop testing.

Product description

The Kidde i9050 basic, battery operated smoke alarm provides you and your family an early warning signal against the dangers of fire and smoke. This easy to install smoke alarm, includes a test button to verify the unit’s electronic circuitry, horn and battery function are work properly. The i9050 also includes a tamper resist feature to help deter theft or tampering. This smoke alarm is powered by a 9V battery and is suitable for all living areas. This alarm uses ionization sensing technology. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fire that can occur within the home. Temperature Range: 40˚F to 100˚F (4˚C to 38˚C).

The battery-powered Kidde i9050 ionization smoke alarm is designed to protect you and your family from the dangers of smoke and fire. This basic smoke alarm is easy to install throughout your home, and it's powered by a 9-volt battery (included). This version comes as a single, but it's also available as a twin pack. Kidde i9050 Includes 9-volt battery. At a Glance i9050 Battery-Operated Basic Smoke Alarm At a Glance: Easy installation--no wiring required Powered by 9-volt battery for continuous protection even during power failures Flashing LED shows alarm is receiving power Low-battery indicator 10-year limited warranty At a Glance Features This basic battery-operated smoke alarm is powered by a 9-volt battery (included), providing continuous protection even during power outages. It includes a flashing red LED to indicate the alarm is receiving power as well as a test button to verify the unit's electronic circuitry, horn, and battery functions are working properly. During a smoke incident, a piezo-electric horn (rated at 85 decibels at 10 feet) will sound in a repetitive manner--three beeps, a pause, three beeps, a pause. It also offers a low-battery warning and a tamper-resistant feature that deters removal of the unit from the wall or ceiling. It's backed by a 10-year limited warranty. The Kidde i9050 smoke alarm uses ionization sensing technology, which generally detects invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Kidde recommends that both ionization and photoelectric smoke alarms be installed to insure maximum detection. What's in the Box One Kidde i9050 Battery-Operated Basic Smoke Alarm, one 9-volt battery, and operating instructions. Kidde i9050

• Easy installation – No wiring required
• Battery operated (9V battery included) – Provides continuous protection even during power failures
• Flashing LED – Indicates alarm is receiving power
• Test button – Verifies battery and alarm operation
• Low battery indicator – Chirps when battery needs replacement

User questions & answers

Question:	Is this the unit that was recalled for not detecting smoke
Answer:	so after fighting with it, i believe the answer might be smoke alarms? the octagonal shape with sides that are parallel to the battery case appear to fit into smoke alarms while the hexagonal (also on Energizer) do not. particularly First Alert/Intertek model SC9120B
Question:	how long do the batteries last
Answer:	Duracell components and batteries are produced at several locations in the U.S. and abroad, including Europe and China. If you have additional questions please contact our Customer Relations team at 800-551-2355 between the hours of 9am and 6pm EST.
Question:	Why can't this be shipped to area code
Answer:	Usually a 2 year lifespan from the date of manufacture. I have always had good luck with Duracell lasting the longest, more than the bunny claims!
Question:	does it have a siliene button
Answer:	It's the date usually found on the btry. On my last purchase of Duracell 9v coppertop btry's MAR 2015 is printed on the btry. The package, while it has no good to date on it says it is guaranteed fresh for 5 years. On this packaging you can not see a good to date on it until you open it and look at the btry. Therefore since it is gtd for 5 years I believe the manufacture date was 2010. Using a top rated btry like Duracell we change smoke alarm btrys every 2 years contrary to the suggested 1 year time frame of replacement. We also check the alarm function every month. We also use these 9v btry's in our garage door openers. Hope this answers your question. LR

Product features

Easy Installation: No wiring required

This smoke detector is battery-powered, easy to install and uses an advanced ionization sensor to detect invisible fire particles so that you can react quickly and get to safety if any hazard is detected.

Protect What Matters Most

Keeping your family safe and prepared for anything is an essential part of your life - and with the Kidde smoke and fire alarm, you will be confident that you are protecting your home in case of emergencies.

Quality Design

The Kidde i9050 is a full size, ionization, battery operated smoke alarm designed to protect you and your family from the dangers of smoke and fire. The i9050 is powered by a 9V battery, providing continuous protection even during power outages. This unit includes a flashing red LED to indicate the alarm is receiving power. The i9050 is UL Listed.