10 best digital sound levels

• USEFUL TOOL IN YOUR WORK & LIFE – This sound level meter is a great tool for checking, monitoring or controlling the sound level of any environments. It is widely applicable for personal, families, business, studies, industrial and etc.
• WIDE RANGES & ACCURATE MEASUREMENT – It measures range from 30 – 130 dB with frequency range from 31.5 to 4Khz. Highly accurate with +/-1.5dB.
• TIME WEIGHTING & FREQUENCY WEIGHTING – FAST(125mS) for time weighting. TYPE A for frequency weighting.
• HOLD , MAX & MIN, AUTO POWER OFF, BACKLIT – Including all useful features such as data hold, max recorded reading and min recorded reading as well as auto power off. Backlit feature allows use of this meter in the dark.
• GIFT BOX PACKAGE - Black carrying pouch and premium color gift box are come with the meter.

User questions & answers

Question:	How well will this work to measure the sound level in a car cabin
Answer:	IT can work fine. When turned “on” it displays an internal reading that appears high. Ignore this reading because the car read is probably higher.
Question:	Can you program this to beep or alarm at a certain noise level
Answer:	no you can not program it at all. it just has the microphone on top to pick the noise up and then shows you on the display what the noise level is.
Question:	Does it lock to the loudest sound? , if I wanted to check the db of a gunshot for example
Answer:	I'm not sure what you mean "lock" but you can check for the loudest db very easily, and the lowest db, too. It doesn't stay on that number forever though. Or at least I haven't gotten it to do that. But I'm usually too busy trying to figure out the average db's. I wish it told me that. It cycles off after so long (maybe 20 - 30 min.) and then you've lost all the data.
Question:	can this record noise over a certain period of time
Answer:	No, this does not record, just measures the decibels of the noise

Product features

Specifications:

• Sound Level: 30 ~ 130 dB
• LCD display: 1/2 Inch and 3 Digits
• Response Time : 0.5 second
• Resolution: 0.1 dB
• Accuracy: ±1.5 Db
• Frequency Range: 31.5 Hz ~ 4 kHz
• Frequency Weighting: A
• Time Weighting: FAST (125mS)
• Microphone: 1/2 inch electret condenser microphone

Wide Applications

This Decibel Meter is an ideal instrument to be used in measuring the ambient sound level,such as sound level around factories, workshops, schools, residential, offices, road, airport, audio etc.It also can be appropriate for noise control （e.g. noise from concert, party, engine, car) product quality control, health prevention and treatment,etc.

LCD Display W/ Backlit

You can use this meter in the dark without problem as it has backlit feature and largeLCD display with clear readings.

Premium Gift Box & Carrying Pouch

A black carrying punch with handle and the premium gift box add values on this device.

Product description

Want to test the sound level? Need to know the noise level? Try our digital sound level meter. This sound level meter can be apply to measure the noise level at different area such as home, school, factory, office room, music room, shopping mall, and more.



Specifications:

Material: ABS

Plug Type: US plug

Measure Range: 30~130dBA, 35~130dBC

Frequency Response: 31.5Hz~8.5kHz

Accuracy: ±1.5dB (refer to sound calibration frequency, 94dB@1KHz)

Frequency Weighting: A or C weighting

Digital Display: 3 large LED digital display

Resolution: 0.1dB<100dB, 1dB>100dB

Display Mode: Fast and slow selectable

Microphone Type: Dia. 6mm ECM type

Alarm Mode: Built in alarm buzzer

Operation Voltage: USB DC5V 1A

Operating Temperature & Humidity: 0～40℃, 10%～80%RH

Storage Temperature & Humidity: 0～60℃, 10%～70%RH

Power Supply: 5V 1A AC/DC adapter

Item Size: 221 * 66 * 32.5mm / 8.70 * 2.60 * 1.28in

Item Weight: 518g / 18.28oz

Package Weight: 701g / 24.74oz

Package Size: 24.5 * 9.2 * 5.2cm / 9.65 * 3.62 * 2.05in



Package Inlcuded:

1 * Sound Level Meter

1 * USB Cable

1 * Plug

1 * User Manual(English)

• 9.5" super large full screen LCD with large bold red font to display for easy reading.24 hours real-time monitoring the sound level.Support hanging on the wall(recommended) or free standing on the desk.
• Wide measurement range from 30dB to 130dB, Frequency: 31.5Hz - 8KHz, Resolution: 0.1dB/1dB, Accuracy: ±1.5dB.
• With A and C equivalent weighted sound pressure levels.Fast and slow dynamic characteristic mode.With maximum/minimum value measurement.
• Buzzing and flashing to remind you when the real time measurement is reach to the alarm level, and hold the data for 3s then back to normal mode.
• Suitable for checking and monitoring the sound level for personal, families, business, studies, industrial, etc.

User questions & answers

Question:	The diagram says the number 2 is callibration hole. Where is a calibration hole in this unit? None is indicated in the picture
Answer:	Does not dry clear.
Question:	is it out of the box ready and calibrated? and just plug and show or do I need to do ton of steps to make it work
Answer:	Hello, Sharon K. Compton. No, this particular product is not paintable. Thank you. GE Customer Service
Question:	need a readout, record the results 24 hour report
Answer:	I wouldn't describe it as glossy... it's kind of the same finish that most caulk has. I wouldn't let that stop you buying it. This is the best caulk I've ever used. It's a little tricky to work with and you have to work fast because it's so tacky. Water just beads up on contact with it. It's definitely a waterproof seal. I'm buying more to do another job because I was so impressed. Hope this helps.

Product description

Economical meter measures sound decibel levels for a variety of workplace situations including workplace machinery monitoring and audio/alarm system checks. Meter features a 40 to 130 dB adjustable measuring range with selectable A/C weighting and fast/slow response. Digital display includes 0.1 dB resolution plus analog bar graph for easy readability. MAX Hold function stores loudest dB level reached and auto power off conserves battery life over time. Features a digital display with a user-friendly analog bar graph.

Whether you're monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the Extech Digital Sound Level Meter gets the job done. This meter accurately monitors sound levels in a range from 40 to 130 decibels. It displays results in the large LCD display in two different ways, either by number or a fast-responding analog bar graph. The lightweight meter easily fits in your hand and can be used wherever you need it.

Accurately Measures Sound Levels

Wherever you need to monitor sound levels, the Extech sound meter will do the job. The meter utilizes a 1/2-inch electric condenser microphone to monitor sound levels from 40 to 130 decibels at an accuracy of +/-2 dB with a 0.1 dB resolution. A windscreen is included to prevent distortion in the readings. User-friendly settings allow you to choose between either A or C weighting. The unit also mounts on a tripod, providing convenient hands-free readings.

Large LCD Screen with Dual Reading Displays

The large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends. The unit has AC analog output and records max/min values over time.

Compact, Lightweight Design

The Extech sound meter weighs less than 6 ounces, and is designed to fit comfortably in the palm of your hand. The meter is white with a black-framed screen and black buttons. Useful features include auto power-off, max hold functions, and fast/slow response time.

Product and Warranty Information

All of Extech's assessment tools are factory calibrated to specifications and work to spec. You can also add an NIST calibration certificate for audits if necessary for licensed testing. The meter measures 9 by 2-1/5 by 1-7/10 inches (H x W x D), and uses four AAA batteries.

The Extech Digital Sound Level Meter is backed by a manufacturer's one-year limited warranty on parts and labor.

What's in the Box

Meter, microphone windscreen, four AAA batteries, and user manual.

From the Manufacturer

Sound level meter measures from 40 to 130dB with an accuracy of 2dB. The digital display offers a 0.1dB resolution and features a fast responding analog bar graph. User can choose A or C weighting. Max Hold captures highest reading. Includes microphone wind screen and four AAA batteries.

• Measures 40 to 130dB on digital display
• 2dB accuracy with 0.1dB resolution
• Fast responding analog bar graph
• Records Max/Min values over time
• Auto power off and Max Hold function

User questions & answers

Question:	can the data be exported to a PC
Answer:	I don't think it can be exported to a PC
Question:	How can it be used to measure dB of a sentence? ( I'm a speech therapist
Answer:	Please see the Users Manual and Data Sheet for complete information:http://www.jameco.com/Jameco/Products/ProdDS/645642UsersManual.pdfhttp://www.jameco.com/Jameco/Products/ProdDS/645642.pdf
Question:	The model presented says 'Extech 407730' but in the description and image apears Extech 407732, which you are sending
Answer:	I am not sure where 407730 is appearing besides the comparison table between the different models. For simplicity, this page is for the Extech 407732. You would get the item in the pictures.
Question:	What is frequency range for this device
Answer:	The SL510 has a frequency range from 31.5Hz to 8KHz.

Product features

Extech Type 2 35 Decibel to 130 Decibel Digital Sound Level Meter

Whether you're monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the Extech Digital Sound Level Meter gets the job done. This meter accurately monitors sound levels in a range from 40 to 130 decibels. It displays results in the large LCD display in two different ways, either by number or a fast-responding analog bar graph. The lightweight meter easily fits in your hand and can be used wherever you need it.

Accurately Measures Sound Levels

Wherever you need to monitor sound levels, the Extech sound meter will do the job. The meter utilizes a 1/2-inch electric condenser microphone to monitor sound levels from 40 to 130 decibels at an accuracy of +/-2 dB with a 0.1 dB resolution. A windscreen is included to prevent distortion in the readings. The unit also mounts on a tripod, providing convenient hands-free readings.

Large LCD Screen with Dual Reading Displays

The large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends. The unit has AC analog output and records max/min values over time.

Compact, Lightweight Design

The Extech sound meter weighs less than 6 ounces, and is designed to fit comfortably in the palm of your hand. The meter is white with a black-framed screen and black buttons.

User-friendly Settings

Choose between either A or C weighting, auto or manual ranging. Other useful features include auto power-off, max hold functions, and fast/slow response time. Record sound values over time to track sound changes.

• The sound level meter is an instrument used to measure the ambient sound level,such as sound level around factories,workshops,schools,residential,offices,road,audio etc
• It also can be appropriate for noise engineering,product quality control,health prevention and treatment,etc.This audio noise measure device is a great tool for checking, monitoring or controlling and test the sound level of any environments. It is widely applicable for personal, families, business, studies, industrial and etc
• With the measuring scope from 30 to 130dB and automatic shifting function. Digital display,good anti-interference performance,power saving
• With the backlight feature,it is appropriate for gathering the sound data at night.Backlight auto power off function is provided.With power saving and high-reliability circuit design,well-design high-efficiency power supply circuit makes the batteries more durable
• Composite material injection molding process is adopted for casing with anti-drop structure design.It is not only extremely wear-resisting,but also elegant,It’s a mini handheld portable sound level reader

User questions & answers

Question:	noisy neighbor issue. Could I set this outside and have it record sound levels overnight 6-8 hours and it would capture sound readings over that time
Answer:	Dear Customer, The item could be capture the MAX or MIN sound level overnight 6-8 hours,but can't record all dynamic data.
Question:	Does this have c weighting and slow response options ( for calibrating monitors
Answer:	Yes it has C weight and fast and slow
Question:	My neighbor is a tire company there business is fenced off, they use compressed air all day, will this pick up the decibels at approx 300 feet away
Answer:	It will read the ambient sound level, and the compressor will be part of that. It shouldn't matter what the sound is at 300 ft. Get a copy of your town's noise ordinance; work with the cops, if that is not satisfactory, lawyer up.
Question:	How accurate is it? Can one rely on the readings
Answer:	The one I have seems pretty accurate, comparing the readings to a minidsp umik-1 they are very close. Assuming the umik-1 is calibrated correctly I would say decently accurate.

Product features

Product Specification

Sound Level Meter is helpful in our life, it’s a good tool for people’s health

Accurately Measures Sound Levels, Compact, Lightweight Design, User-friendly Settings with Large LCD Screen

• Frequency response: 31.5~8.5KHz
• Measurement range: 30~130dBA
• Calibration sound source: 94dB @ 1kHz
• CE Certified & RoHS Compliant

User questions & answers

Question:	Does this unit come calibrated traceable to nist standards
Answer:	Nope
Question:	How can this meter be calibrated
Answer:	This unit is supposedly calibrated at the factory. Otherwise, you can measure a noise source with a known calibrated meter and then compare the readings.
Question:	Is this a type
Answer:	Standard Applied: IEC651 type 2, ANSI SI .4 type 2
Question:	Can you capture realtime output from the USB cable, or is the software the only way to view the data
Answer:	Yes, you can export the data with the USB cable. Please connect to a PC to do the record setting(like recording interval ect.)before record, then press "Rec" on the meter to start to record. The data will record in the software and then you can download.

Product features

Features:

1. Sound level Range:30 to 130dB(Auto Ranging)
2. Frequency weighting: A/C
3. Fast/Slow time weighting selection
4. Max Hold function / High accuracy
5. Bar display
6. AC/DC function
7. Over / Under indicator
8. Time and date display / Low Battery Alert
9. Auto-off function setup
10. Tripod Mount (Tripod not included)

Specifications

1. Calibration sound source: 94dB @ 1kHz
2. Measurement range: 30~130dBA
3. Accuracy: ±1.5dB(reference sound pressure standard, 94dB@1KHz)
4. Frequency response: 31.5~8.5KHz
5. Resolution: 0.1dB
6. Analogy bar graph: 2dB/1 Bar graph increment
7. Display update time: 2 times/second (FAST), 1 time/second (SLOW)
8. AC signal output: 4Vrms/ full barograph, output impedance is approx 600 ohm

More Specs

• DC signal output: 33mV/dB
• Sampling rate: FAST (125ms / SLOW (1s)
• Dynamic characteristic: FAST (high speed) / SLOW (low speed)
• Power supply: 4 x AA Size 1.5V battery or USB Power Cable
• Item Weight: 7.4 ounces

This sound meter can read between 30dB~130dB, while reducing the effects of wind noise to produce more accurate readings.

Applications includes: Environmental measurement, law enforcement, work place design, sound level analysis of machinery and engines.

• ▲FAST/SLOW MODE & SOUND SIMULATED INDICATOR - Dual modes meet different needs in sound measuring, fast-response mode (125ms) for steady-state noise, and slow-response mode (1s) for noise with large fluctuations; All measuring results are shown with data and sound simulated indicating on the screen
• ▲MAX/MIN LOCKING & DATA HOLD - One button switches easily in max or min value reading with signal shown on the screen; Short press on the “ HOLD” to support data freeze in distant and long press to turn on the LCD backlit display and flashlight simultaneously to fit in poor visibility and darkness
• ▲OVERLOAD WARNING & AUTO SHUT-DOWN - Overload warning is considered as reminding by showing “UN” when less than 30 dB or “OL” when more than 130 dB; The noise meter will auto shut-down after 10 mins of inactivity, which can be cancelled successfully by pressing power button and fast/slow button simultaneously when “COU” shown
• ▲HIGHER ACCURATE & WIDER FREQUENCY RANGE - Calibrated to the standard source in advance by the factory, this meter helps to get a more accurate result in various environments, like factories, workshops, home, schools, road, audio etc; Frequency range 31.5 to 8 KHz, accuracy: ±1.5 dB, resolution : 0.1 dB
• ▲WHAT YOU GET - 1x TACKLIFE Sound Level Meter MLM02 (windscreen included), 1x 9V ( 6F22 ) battery (low power indicator available), 1x user manual (If you have any problem about it, please do not hesitate to contact us , our Support Team will solve your problems in time)

User questions & answers

Question:	Does this meter do dbC weighting in addition to dbA
Answer:	The instruction booklet describes only “A” weighting. There is no reference to dbC mentioned.
Question:	what does weighing a+unit mean? what is a triangle bracket? thanks
Answer:	triangle bracket is I believe is referring to a tripod like for a camera ,
Question:	what about its warranty
Answer:	From the warranty card included in the box: Within 30 days - return for full refund; 30-90 days - will replace defective unit with a new one; 90 days to 6 months - Will replace unit with new one. If registered on tacklifetools.com - receive extra 3 months warranty. Contact [email protected] for RMA #.
Question:	Where is this product made
Answer:	"Made In China" ... that is what is molded on the 9v battery door. Not sure why that really matters as it seems that 80% of the world's products come from China. If we were a bit more tyrannical, empirical, communistic methods then maybe we could compete but who wants to make products where we poison the community, the workers and their minds. I remember where things were "Made in the USA" and if it came from another country it was like "wow!" really? Back in the 60's, anything German and Japanese had a great reputation ... so where where we? oh yes ... I have one and it works and its cheap and its made in China. I hope this helps

Product features

Vivid Simulated Indication

• With simulated indication function, even slight decibels changes in consistent measuring can be vividly seen.

• Analog vocal vocalization designed to make a more intuitive feedback in sound noise level learning.

Warning Tips:

1. If doing noise measurement outdoors, please put a windscreen on the microphone head to prevent the microphone from being blown directly to cause airflow noise.
2. Check the instrument carefully before use. If you find any damage or other problems, please do not use and get our support.

Overload Indicator Display

• The meter is perfectly fitted with the common needs of sound noise testing, with the ability to detect decibels range from 30 to 130 dB, and overload indication displaying to make a reminding.

• Whether at home or outdoor, this digital noise meter make it easier to confirm sound levels by standard sounding with data and simulated indication and overload alarming, make the sound be more tangible to enjoy yourself whenever and wherever.

1. When the decibels level is less than 30 dB, “UN” display on the screen
2. When the decibels level is over 130 dB, “OL” display on the screen

LCD Backlit Display & Flashlight

• Keystroke the “ HOLD” button more than 2 seconds to turn on/ off the backlight and flashlight.

• LCD backlight and flashlight are convenient for working in dark environments, for concerning of saving energy, these 2 functions are opened/ closed together and will be automatically off after 1 minute.

Max/Min & Auto Shut Down

• One button switched to change maximum or minimum recorded reading by short pressing the “MAX/MIN” button.

• The meter will be auto off after 10 minutes no activity, and can be closed by keystroking the “SLOW/FAST” and the power button more than 2 seconds at the same time.

Data Hold & Time Weighting

1. With data hold function, you are free to freeze the current measurement reading and easy to record.
2. Time weighting is divided into 2 modes of measuring - slow & fast mode response

• Slow mode - With response time of 1 s, the meter is generally used to measure steady-state noise, and the measured value is a valid value.
• Fast mode - With response time of 125 ms, the meter can measure unsteady noise and traffic noise with large fluctuations. The fast gear is close to the human ear's reaction to the sound.

• 【Min/Max/Data Hold Function】 - Note: This noise meter has been calibrated at the factory. IF you want to calibrate it again after using a period of time, please use the 94 dB standard source. The Sound Level Tester records the minimum and maximum sound decibels around any given time range and freezes the current measurement readings.
• 【Large LCD Display】 - Clear readings and easy to use at night, widely used in factory, transportation, car, baby room and audio system office, sound quality control in home, school and construction site
• 【Precision measurement & over-range measurement warning sign】 - Measurement range: 30-130dBA, accuracy: ±1.5dB, resolution: 0.1dB, there will be a warning sign when the standard exceeds the standard
• 【Convenient & Lightweight】 - This sound pressure level (SPL) meter is lightweight and easy to carry. With a mounting hole for the tripod， which can be placed on the stand and is easier to measure when your hands are busy
• 【Auto/Manual Shutdown】 - It will automatically shut down after 10 minutes when not in use. Note: After using, please press and hold the shutdown button for 2 seconds.

User questions & answers

Question:	Is it normal for the device to measure 47 dBA in a quite room out of the box
Answer:	47 seems a bit high, but listen to what is around you. There may be things that you've grown accustom to and therefore 'tune them out'. If you have a large closet with a fair amount of hanging clothes (they absorb a lot of noise), try it in there. In my case I get 38-40. Also, holding it can make a difference. What do you get if you put it on a tripod? I had an opportunity to compare mine to a pro-quality unit (> $2,500) in a sound room, but didn't think about it at the time given the rush to get things done.
Question:	Why is it Not calibrated at factory
Answer:	Dear Our products are calibrated with standard sound sources before leaving the factory, because in a quiet environment it does not mean no sound. You can rest assured that our products are professionally tested and calibrated. Please feel free to purchase and use.
Question:	Would this be good at measuring sound spikes or just ambient noise? For example trying to measure a gun shot at the range
Answer:	Yes. It can be set to track the highest sound and hold that measure so you can review it.
Question:	Do these meters conform to ansi si
Answer:	Unfortunately I am not able. The product information is very vague but then again it was very in-expensive. I'm using it for general measurements. If you're looking to meet ANSI then I suggest you spend the money and buy an appropriate product from a more scientific company. No slam on Meterk but they appear to sell a wide variety of products. You may wish to consider Amprobe SM-10 at $172 as it seems to meet ANSI, IEC, JISC (Japan) and N10140 (Australian) standards

Product features

Features:

◕‿◕Large LCD backlight display for clear reading, convenient to use at night.

◕‿◕Wide measuring range: 30-130dBA, Fast Responding.

◕‿◕Sound level measurement with stable and reliable performance.

◕‿◕Min./Max./Data Hold function and OVER warning sign of over range measuring.

◕‿◕Low battery indication, manual/auto shut off.

◕‿◕Equipped with sponge ball.

◕‿◕With mounting hole of tripod, allowing to be placed on the stand, easier measuring when your hands are busy.

◕‿◕Portable and easy to use, suitable for sound quality control in factory, traffic, car, baby room and audio system office, home, school and construction site.

• ✿【High Precision Sound Level Meter】 Measuring Range:30~130dBA/30~130dBC. Accuracy: ±1.5dB. Resolution: 0.1dB. Frequency Range:31.5HZ-8.5KHZ.Sampling Frequency:2 times/sec. With LCD backlight, Low battery indicator, Overload indication, Dynamic feature adjustment.
• ✿【A/C Switch】 Frequency weighted selection switch A/C switch. dBA is the amount of noise felt by the human ear.dBc is suitable for measuring the noise level of the machine.When you need to measure the noise of people, you can convert to dBA to measure more accurately.Measuring machine noise select dBc.
• ✿【Level Ranges Selection】Selectable measurement position:30~80dB,50~100dB,60~110dB,80~130dB.You can measure more accurately by selecting the level range.If the reading under the level range you select, it will show "under" in the upper left corner to remind you to adjust the gear.
• ✿【AC/DC Signal Output Hole】 Comes with a wire that can be connected to a frequency analyzer or X-Y axis recorder for statistical analysis.
• ✿【Package Included】 Professional Noise Meter*1, 882A Sound Meter Special Toolbox*1, Instruction manual*1, Plug*1, Sponge ball*1, Small screwdriver*1

User questions & answers

Question:	What is the difference between the "two standard 3.5mm coaxial jacks [that can be] connected to frequency analyzer" (as shown in 4th photo
Answer:	Sound pressure frequency response: 30Hz - 8KHz

Product features

AOPUTTRIVER AP-882A Sound Level Meter

Accuracy: ±1.5dB

Resolution: 0.1dB

Time Weighing: Fast/Slow

Frequency Weighting: A&C

Sampling Frequency: 2times/sec

Frequency Range: 31.5HZ~8.5KHZ

Measure range: 30~130dBA 30~130dB

Microphone: 1/2 inch Electret Condenser microphone

Compact, Easy to use, Easy to read & Great for general purpose measurements

AP-882A decibel meter is a portable, easy to use and handy instrument for sound quality measuring, monitoring and controlling in office, home, school, traffic, audio system and construction site. The meter has wide range of applications such as noise pollution studies, research and other industrial uses.

30-130dB Decibel Meter

With a high accuracy (+/-1.5dB,0.1 dB resolution) and a wide measurement range (30dBA-130dBA)

LCD Display W/ Backlit

You can use this meter in the dark without problem as it has backlit feature and large LCD display with clear readings

Foam Ball for Outside Measurement

Come with a foam ball. Fits on the meter and reduces wind noise. It makes you omore convenient for outdoor measurements.

AC/DC Output

Come with a Output Wire for Analysis, Normal conversation is about 60 dB, a lawn mower is about 90 dB, and a loud rock concert is about 120 dB. In general, sounds above 85 are harmful .

Convenient for Further Analysis

There are output interfaces (AC/DC output) on the side of noise measurement device,which can be better connected with other devices

Decibel Meter is Helpful in Our Life

Long-term in a noisy environment has a serious impact on the human nervous system, cardiovascular system, digestive and endocrine system, So our decible meter can help you out of this problems.

Wide Applications

This Decibel Meter is an ideal instrument to be used in measuring the ambient sound level,such as sound level around factories, workshops, schools, residential, offices, road, airport, audio etc.It also can be appropriate for noise control （e.g. noise from concert, party, engine, car) product quality control, health prevention and treatment,etc.

Product description

Digital Sound Level Meter with a 40-130dB range and a large LCD display with analog barograph. This product is NIST Certified which indicates that the product is traceable to standards provided by the National Institute of Standards and Technology (NIST).

• 2dB accuracy with 0.1dB resolution
• A+C weighting
• AC analog output
• Record Max/Min values over time
• Utilizes 0.5"(12.7mm) electret condenser microphone

User questions & answers

Question:	Does this unit come with a windscreen
Answer:	Hi! Yes! Our products could be curl as you need, but please control the temperature under 160 degree. Hope this helps.
Question:	Does the Extech 407730 come with instructions for how far away to position the device from a person's mouth
Answer:	Yes!! You pay to move your hair around so the tape part doesn't show but, I actually have my hair up right now with no issues!
Question:	Is this unit a type 1 per ansi s1.4 - 1971? this will meet the qualifications for outdoor testing
Answer:	Just like ghost bond, it remains tacky
Question:	Does it have nist digital calibration certificate
Answer:	After washing, immediately remove the remaining glue with a little adhesive remover.

Product features

Extech Type 2 35 Decibel to 130 Decibel Digital Sound Level Meter

Whether you're monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the Extech Digital Sound Level Meter gets the job done. This meter accurately monitors sound levels in a range from 40 to 130 decibels. It displays results in the large LCD display in two different ways, either by number or a fast-responding analog bar graph. The lightweight meter easily fits in your hand and can be used wherever you need it.

Accurately Measures Sound Levels

Wherever you need to monitor sound levels, the Extech sound meter will do the job. The meter utilizes a 1/2-inch electric condenser microphone to monitor sound levels from 40 to 130 decibels at an accuracy of +/-2 dB with a 0.1 dB resolution. A windscreen is included to prevent distortion in the readings. The unit also mounts on a tripod, providing convenient hands-free readings.

Large LCD Screen with Dual Reading Displays

The large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends. The unit has AC analog output and records max/min values over time.

Compact, Lightweight Design

The Extech sound meter weighs less than 6 ounces, and is designed to fit comfortably in the palm of your hand. The meter is white with a black-framed screen and black buttons.

User-friendly Settings

Choose between either A or C weighting, auto or manual ranging. Other useful features include auto power-off, max hold functions, and fast/slow response time. Record sound values over time to track sound changes.

Product description

Need to Test if a Noise Source in Your Neighborhood or at Work is Dangerously Loud?



Use this Decibel Sound Level Meter to Get Convincing Data

The ennoLogic eS528L is a professional sound level meter that provides reliable decibel readings over a range of 30 to 130 dBA with an accuracy of ±1.5dB. The large backlit display is easy to read from anywhere and in any environment. Use this instrument to measure and record noise levels in offices, factories, in your neighborhood or at home. You might want some solid data to convince your coworkers that they should wear ear protection at the worksite. Or fine tune your audio system at home. Or make sure your new aftermarket exhaust is operating below the maximum permissible noise level limits. The uses are endless, and you’ll soon find yourself walking around your home checking the sound level of everything.

To record data: Configure unit via USB with included software. Disconnect device from computer and record noise data. Reconnect to computer to download recorded data.

Specifications

- Measurement range: 30~130 dBA

- Accuracy: +1.5 dB (reference sound pressure standard 94dB @ 1KHz)

- Standard: IEC61672-1:2013 Class 2

- Frequency response: 31.5~8KHz

- Resolution: 0.1dB

- Frequency weighting: A/C

- 3 ½ digit LCD with analog bar graph

- Sampling rate: FAST: 125ms, SLOW: 1s

- Analog signal output (AC and DC)

- Power: 9V battery or external via USB

- Data recording: internal memory of 32000 data points, programming and upload via USB and software (Windows only!)

- Size: 8.5”x2.5”x1.25”

- Weight: 8.8 oz (250 g) including battery

- Package includes one eS528L, 9V battery, USB interface cable, software CD, and user manual

Like all ennoLogic products, the eS528L comes with a 10-YEAR WARRANTY, HASSLE-FREE REPLACEMENT GUARANTEE, and 100% MONEY BACK GUARANTEE.

Order now risk free.

• THE ENNOLOGIC DECIBEL METER provides accurate sound level (decibels or loudness) readings from 30 to 130 dB with ±1.5 dB accuracy. It is the ideal tool to discover if something at your workplace or in your neighborhood is too loud, potentially causing hearing damage. Loudness is highly subjective and difficult to determine without proper equipment. Use this Type 2 decibel meter to get convincing data for any situation.
• AVOID OR RESOLVE DISPUTES WITH YOUR NEIGHBORS: Monitor and record noise levels in your neighborhood and outdoor traffic in your area. Check how loud your car audio is. Make sure your aftermarket exhaust is below the noise ordinance limits. Check the decibel level of leaf blowers, weed eaters, lawn mowers, and tractors. Know the actual sound level in decibels before talking to your neighbors.
• DETERMINE IF YOUR WORKPLACE IS SAFE: Do you need to prove to your coworkers that a noise source at your workplace is too loud and causes hearing damage? Monitor sound levels on a construction site? Now you can monitor and record sound levels of machines or equipment, or perform area noise monitoring anywhere. Unlike other meters, the ennoLogic eS528L can record noise levels for hours or days for later review and to provide supporting data.
• VERY USEFUL AT HOME: Balance the outputs of your home theater speakers, not easily done by ear. Sound proof doors and windows. Measure how quietly your air conditioning runs, or sound levels of home appliances. Or take this meter to a store to compare the noise level of appliances or air conditioners before purchasing.
• RELIABLE AND ROBUST DECIBEL METER: Measurement range 30-130 dBA, accurate to ±1.5 dB. A and C frequency weighting. Fast and slow response. MAX reading display and ANALOG BAR GRAPH DISPLAY. Analog outputs (DC and AC). Large 1.5” LCD display with BACKLIGHT, easy to read even from a distance. Tripod mount (tripod not included). External power option. Auto power off with override option. Comes with 9V battery, Software CD (Windows only), USB cable and user manual. 10 YEAR WARRANTY.

User questions & answers

Question:	Would this work if I hold it close to the ceiling to pick up the noise coming from the upper neighbor? Would it pick up all the noise/vibrations
Answer:	Hello,No batteries needed for this refractometer,it's portable when you go out.It's a tool designed based on the function of refraction.
Question:	Entonces que significa "configurar el medidor" ? ... y me dicen que "nuevamente" necesito la laptop ... lo de la descarga posterior, en oficina, es OK
Answer:	Hi,yes,absolutely for different purpose use.This honey refractometer is 3 in 1 use,scale displays (brix,Baume,water content) .You can use it in many applications, bee supplies purpose is the most often used application,you can use it to test Olive-oil, homebrew and making maple syrup and many other cases.
Question:	Does it need to be connected to PC for recording
Answer:	We advise 3 month or more.you don't have to calibrate it frequently.This refractometer is equipped with ATC automatic temperature compensation system, once calibrated, the change of working temperature within +/-30℃ wouldn't effect the accuracy of reading result.you can calibrate it more if you want to make sure the best accuracy. And the calibration is not complicated at all. Just need a few drops of distilled water and adjust the result to "0", you'll finish the calibration in minutes by following the instruction
Question:	OK..pero en campo...para ejecutar las mediciones, necesito una laptop conectada ? es que no entiendo la configuración del medidor
Answer:	Yes, it screws in and out to adjust the focus.