13 best level with modules

Product description

If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time. This level converter also works with 2.8V and 1.8V devices. What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side. The level converter is very easy to use. The board needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using. High voltage (5V for example) to the HV' pin, low voltage (3.3V for example) to LV', and ground from the system to the GND' pin. Dimensions:0.63 x 0.52" (16.05 x 13.33mm)

User questions & answers

Question:	I dont understand. When I crimp the terminals onto the wire, the insulation just becomes loose and falls off... what am I doing wrong
Answer:	Dunno what you're using for a tool. Most multi-gauge wire-strippers have a blunt staking/crimping function that won't damage insulation. Wire-cutters will crimp the fitting, but also cut the insulation sleeve.
Question:	Would these work to extend copper wires for a doorbell
Answer:	These are very good for use in wire termination and a screw terminal block. I don't think it can extend copper wires for a doorbell.
Question:	What's the fork outer dimension/width
Answer:	EXACTLY .0.25 (1/4 of an inch)
Question:	Could these be used with the power wire for a car stereo
Answer:	Yes, if the wire gauge is between 18-22. If the wire is larger or smaller, you can get different sizes.

Product description

Digitally displays degrees, percent slope and pitch to 1/10 degree accuracy. Features audio sound at level and plumb. Includes standard 9 volt battery.

Welcome to the versatile world of SmartTool. Most levels only give you information at level (0 degrees) and plumb (90 degrees) using bubbles you have to work to center visually between two lines.  You can do that with SmartTool, too, but the SmartTool also lets you measure digitally, electronically, and with an actual number, at every angle, all 360 degrees of a complete circle.  So installing a deck, stair rail, extending a roof or determining how much an old floor has sagged is simpler, less time consuming, and more accurate.

SmartTool is simple to use. Just press the on/off button and SmartTool will show you the angle of any surface with decimal-point accuracy.  The display even flips over with the level so SmartTool always reads right side up And it shuts off automatically after 6 minutes when it's not being used, all this from a standard, 9-volt battery. And, SmartTool can take abuse other levels can't, because its components are made of high strength materials and you can reset it to factory accuracy with the touch of a button.

Many versatile options

If you can imagine times you'd like to have both a small digital torpedo level and a longer level, the SmartTool Module fills the need.  The SmartTool Module can be used as a stand alone level or it can be placed in the optional American I-beam level in lengths of 24 inches, 48 inches or 96 inches. M-D's top-quality red aluminum I-beam levels have been assured of excellence among construction professionals for more than three-quarters of a century. Easily attached or removed using only a screwdriver or coin, the versatility of this product can be appreciated in almost any application. The simple, SmartTool patented field calibration procedure can be performed using one button, any reasonably level surface, and just a couple of minutes. When used with the optional magnetic bracket, the SmartTool Module will stay on saw blades, metal pipes, buildings, machinery or anything made of iron or steel allowing hands free measurement.

Simple to use

SmartTool permits you to find level and plumb in two ways.  For quick references, use the sensitive bubble vials. For highly precise work, use the digital display on the Sensor Module.  It provides accuracy to 1/10 of a degree. But the real advantage of the SmartTool is that it also reads all the other angles bubble vials don't.  So when you are not dealing with level or plumb, SmartTool quickly tells what the angle is and what the angle needs to be.  And only SmartTool allows you to measure angles three different ways: degrees, percent slope, and pitch (rise over run).

Read in Degrees

Set saw blade angles to a fraction of degree accuracy with SmartTool.  Assure there is no gap when you join 2 cuts together with .1 degree accuracy. You can easily duplicate a stair angle for setting handrails and never again will you be measuring top and bottom to make sure stair treads and rails are parallel.

Percent Slope and Pitch

In the percent slope mode the SmartTool allows you to read angles to meet requirements for sewer connections, ADA ramps, and grading. And showing compliance is merely a matter of pointing to the display. SmartTool also gives you roof pitch readings -- in inches of rise per foot of run -- right on the display. No two-handed measurements, no conversion calculations, and no mistakes.

Listen and Level Audio Feature

Have tasks where you really can't see the SmartTool but need instant feedback?  Then turn on the audio beeper.  When turned on with a single button, SmartTool lets you hear when your task is at level or plumb.  This can be great when shimming projects, leveling buildings, pool tables or other projects where you need immediate feedback but are not in a position to see the display. This can leave your hands free to adjust, nail, or screw the project in place when you hear the beep telling you it is where you want it.

Hold

The hold button makes it easy to measure in areas where the digital display is not visible.  Take the measurement, push the hold button, and then bring the SmartTool in front of you to see your reading.

From the Manufacturer

SmartTool electronic level all ready to go in a 2 ft. long aluminum frame. Only SmartTool electronic level can measure all angles in a 3600 range. Installing a deck, stair rail, extending a roof, or determining how much an old floor has sagged is simpler and less time consuming. The display even flips over with the level, and it shuts off automatically after 5 minutes when it is not being used, all this from a standard, 9-volt battery (not included). Features: angle accuracy to 1/10 of a degree, the mode button lets you see angles in three ways-degrees, percent slope or pitch (inches of rise per foot of run), and Listen & Level ideal for poorly lit areas. Also allows hands-free operation as the audible tone alerts you when tool reaches level or plumb. Please note that the module cannot be removed from the rail.

• Angle accuracy to 1/10 of a degree
• The mode button lets you see angles in 3 ways - degrees, % slope or pitch
• Audible tone allows for hands-free operation
• Runs off of a standard 9v battery
• Automatic shut-off after 5 minutes

User questions & answers

Question:	does this listing come with a case
Answer:	It doesn't come with a case. It is a great level. I work for the City of Belen New Mexico. When we have sidewalk construction projects, we are required to check the cross slope of sidewalks to make sure the cross slope is under 2% especially if we are using federal money. When we are dealing with the American with Disabilities Act, the feds have really tight requirements. This level meets their requirements. They require checking with a level which is 2 feet long. This is kind of ridiculous because when checking forms on their specified 5 foot wide sidewalks, a 2 foot long level doesn't work to well. This is easily solved by laying the level on the 2x4
Question:	Can I remove the module from the 24" beam to use it on a tablesaw blade, or in a small space
Answer:	You might consider using a M-D 92346 Smart Tool 6-Inch Digital Inclinometer. It's similar and could work for this purpose.
Question:	Does the module come out
Answer:	I got this as a gift and have no idea Sorry
Question:	Is there a laser module on the SmartTool level ruler
Answer:	Good question. My level doesn't have one, but watching the SmartTool video it appears they do make one with a laser. They must make several models. Sorry I couldn't be more help. By the way, my SmartTool level is the first one I reach for out of my tool box.

Product description

The relay comes with 1(single) channel 5V activation relay, ready to control 250VAC at 10A. Extra isolation with opto-coupler at the front end of control, and the activation logic for relay is configureable via a mini jumper.



Technical Specifications:

Channel: 1 channel

Working Voltage: DC 5V

Normally Opened Compatible Load: 10A 250VAC / 15A 125VAC / 10A 30VDC

Quiescent Current: 5mA

Maximum Current: 190mA

Trigger Current: 2 - 5mA

Trigger Voltage(LOW): 0 - 1.5V

Trigger Voltage(HIGH): 2.5 - 5V

Insulation resistance: 100MΩ (500VDC)

Action time (under rated voltage): less than 10ms

Release time (under rated voltage): less than 5ms

Power indicator (green), relay status indicator (red)

User friendly interface design. All interfaces can be connected directly via terminal wiring leads.

Module Size: 51mmX25.5mmX18.5mm /2.07X1.01X0.73inch(L*W*H)

Input Interface:

DC+:connect to power positive (according to the relay voltage range)

DC-: connect to power negative

IN: relay module trigger pin (high or low level trigger Optional)

Relay Output:

Normally Opened (NO) : normally open pin of relay. NO pin is not connect to COM pin when relay off.NO pin is connect to COM pin when relay on;

Common pin (COM) : Common pin of the relay;

Normally closed (NC) : normally close pin of relay.NC pin is connect to COM pin when relay off.NC pin is not connect to COM pin when relay on;

High/Low Level Trigger:

1. Low level trigger when jumper and L short circuit;

2. High level trigger when jumper and H short circuit.



Package includes:

5 x One Channel 5V Relay Module with Optocoupler Module

• It is 1 Channel Isolated 5V 10A Relay Module, Standard interface can be directly connected with microcontrollers and be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, DSP, etc., very convenient.
• Equipped with high-current relay, maximum load: AC250V 10A, 15A 125VAC, DC30V 10A; Trigger current of opto-isolator: 5mA.
• RELIABLE: Fault-tolerant design, even if the control line breaks, the relay will not move; With optical coupling isolation, triggering more reliable, more stable.
• EASY to INSTALL: Equipped with screwed terminal plate and fixed bolt holes(diameter: 3.1 mm) on both sides for easy installation.
• High/Low level trigger can be selected by jumper. Very versatile, you can reverse the input logic with the jumper.

User questions & answers

Question:

Can this relay be used to control a 12v circuit from a 110v circuit? the 110v circuit powers the relay to manage the 12v circuit

Answer:

No, it cannot. The "name" of the relay usually includes the voltage to power it, to control it, 12v INPUT for this relay. The contacts are the output and can usually be anything you want (within their ratings). IF you are talking about 110v AC (like home wall socket power in the US), then you would want something like https://www.amazon.com/API-ELE-Warranty-Electromagnetic-Power-Indicator/dp/B07KMF6BXP which is a 110V AC relay. The output contacts are rated for UP TO 5 amps / 24 volts DC, so it can control a 12v circuit (if it is NOT more than 5 amps).

Product description

KeeYees: Best choice in various Electronic Modules & Components, DIY Parts and Tools to support your work and design challenges from Home, School to Industrial applications!



How to use it:

The level converter is very easy to use, it needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using. 

Take the high voltage (5V) and low voltage (3,3V) for example.

5V connects to HV pin;

3.3V connects to LV pin;

Ground from the system connects to GND pin.



Package Include:

10 x 3.3V-5V 4 Channels Logic Level Converter Bi-directional Shifter Module

20 x 6Pin Single Row Pin Header

• The bi-directional logic level converter is a small device, which can safely steps down 5V signals to 3.3V and steps up 3.3V to 5V at the same time.
• This level converter works with 2.8V and 1.8V devices, it can bidirectionally transfer with 4 channels between high logic voltage and low logic voltage.
• Each logic level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.

User questions & answers

Question:	How would this mount to a raspberry Pi? would I have to solder it
Answer:	You have to solder the pins or wires directly onto the logic leveler.
Question:	After soldering on the male pin headers, are these breadboard friendly
Answer:	The best I ever got! Create perfect rows!
Question:	do you have the datasheet
Answer:	i have never seen a datasheet for this module. however, there are a number of datasheets around for other modules, and they should be pretty similar. just remember this is not a high current device.
Question:	I get flickering when i use these with 2815b leds and a raspberry pi - should unused channels be grounded
Answer:	No, you do not need to ground the open channels. However, it is very sensistive to bad ground on the channel you are using. Also, if you did not use flux or flux-core solder, you will get unsatisfactory results. I found that most of the problems I experienced were the result of bad soldering.

Product description

This Wire-In Touch Dimmer Replacement Kit works with any touch lamp and converts it to a 3-level touch control light. Upgrade your existing touch control table lamp or use as a touch lamp switch replacement

• WESTEK TOUCH DIMMER – This universal wire-in touch lamp control switch works in any touch light lamp and converts it to a 3-level touch control. Upgrade your existing touch control table lamp or use as a touch lamp switch replacement
• MOOD LIGHTING IN YOUR HOME – The dimmer module allows your touch lamps to have 3 levels, perfect for reading, watching movies or enjoying romantic dinners. This touch lamp dimmer plug helps create a calm atmosphere in your bedroom and other rooms in your house at night
• EASY INSTALLATION – This compact light control module easily installs in the base of your lamp. Installation instructions for this lamp dimmer switch replacement kit are included with purchase
• SPECIFICATIONS – The touch lamp kit works with incandescent and halogen bulbs only. NOT COMPATIBLE WITH LED lights 300 Watts maximum. 120 V, 60Hz
• REMEMBER – This item is for use with indoor lamps only. Do not use with another dimmer or 3 way lamp kit in the same circuit

User questions & answers

Question:	Any brightness issues? My lamp, with a new 3 way max 100w, is no brighter than a night light
Answer:	I believe I returned mine and found something equally affordable on Ebay because it actually worked with LED lights for dimming. Search Ebay for " 2x110V 3Way Light Touch Sensor Switch Control for Lamp Desk Bulb Dimmer " 2019-12-07
Question:	does this turn light off and on as well as dim
Answer:	I still don't see any information as to which wire is #1, #2, or #3. Why they can't identify this or tell the user which color wire to connect to which to part of the lamp? I think these are the poorest instructions I have ever seen. Phillip Waterman
Question:	Will this replace Westek 6553 200 watts
Answer:	I'm not sure about the number that you're asking about, but this will work in any touch lamp. I used it and it works perfectly.
Question:	The item description says this will work with incandescent OR halogen lamps, but the photo of the unit states "Incandescent Lamp Only." Which is true
Answer:	Per the web-page description, packaging highlights, and the microscopic included instructions, this dimmer is for "incandescent or halogen bulbs" It works with MY halogen bulbs. Contrary to a previous comment in this thread: ALL halogens ARE suitable for dimming, because ALL halogen bulbs ARE incandescent bulbs--enclosed in a sealed capsule, which surrounds the incandescent filament with a halogen gas atmosphere. Refer to https://en.wikipedia.org/wiki/Halogen_lamp The reviewer has conflated halogen bulbs with either LED or CFL bulbs--some can be dimmed; some cannot, read their packaging.

• ▲SMART SELF-LEVELING AND MANUAL MODE: Unlock the pendulum function by sliding the side switch to on, if the tilt angle is ≤ 4 °, the laser level will automatically level for horizontal/vertical/cross line, otherwise the laser will flash to indicate out-of-level condition. Press the switch to off, start manual mode, lock lines to fixed angles for alignment.
• ▲3 IN 1 LEVEL LASER AND HANDY TO USE- HYCHIKA laser level offers 3 line patterns-vertical, horizontal and cross line laser with the maximal laser visibility reaching 50 feet. Compact and lightweight for easy gripping, IP54 protection grade. Equipped with a nylon zippered pouch, can prevent dust for storage and protects the level and L base against impact/scratching
• ▲TWO USING WAYS TO CHOOSE: The laser level can be affixed to most metal surfaces using the magnetic bracket (included) , or mounted onto a tripod of 1/4" size, turning around at 360° freely and projecting laser lines in any position or angle.
• ▲WIDE APPLICATIONS: Adopting advanced laser module of QSI and ARIMA to emit brighter and clearer laser lines. More than 20h lifetime under continuous using with higher precision of ±1/8 of an inch at 30 Ft and lower energy consumption, ideal for paving tiles, installing photo, door, window, or furniture carpentry, hanging wallpaper, construction works, etc.
• ▲PACKAGE CONTENTS: 1 * HYCHIKA Laser Level Tool; 1 * Magnetic L Bracket; 2 * AA Batteries; 1 * Carrying Bag; 1 * User's Manual. 24 Months Promise.

User questions & answers

Question:	When in the manual (locked) mode & tilted more than 4 degrees does it blink/flash or is it maintained solid
Answer:	Hello, Yes, if the laser level is locked, more than 4 degrees, it will blink, the light is red.
Question:	Is this a double sourced laser level
Answer:	Yes, the line laser is a double sourced
Question:	Is this line laser work outdoor
Answer:	This laser level would work indoor, we do not suggest that you use it outdoor.
Question:	Can the laser be easily seen in Outdoor or bright sunlight indoor
Answer:	I bought this to use on indoor projects. Maybe more suitable for indoor use.

Product features

HYCHIKA Laser Level Line Laser with Double Laser Module Measuring Range 15 M

• Dual Laser Module: With advanced dual laser modules of great precision, you can toggle among horizontal/vertical /crossing lines freely.
• Long battery Life: Over 20 hours continuous using time.
• Intelligent Self-leveling: If the Inclination angle ≤4 °, the laser will automatically level.
• Wide Usages: Ideal for aligning floors, doors or windows, laying tiles etc.

Note:

• Never point the laser at yourself, people or animals, or it will hurt their eyes. It may blind or dazzle people.
• Never operate the item in an explosive area or near flammable liquids or gases.
• Remove the batteries if the laser is not used for more than 3 months to prevent the risk of damage due to leaking battery fluid.

DUAL MODULES

Our laser level is produced with dual laser modules that will satisfy your different needs, so you can toggle among vertical & horizontal & crossing lines. In addition, it features higher brightness and lower energy consumption.

3 Measurement Modes

You can alternate among single horizontal, vertical and double cross lines according to your different needs.

Intelligent Self-leveling

Move the button to unlocked position to enter self-leveling function. It self-levels within 4 degrees.

360 Degree Rotation

The laser level rotates 360 ° and can project a red horizontal/ vertical/cross line laser at any position or angle.

Useful and Wide Applications

Adjust the side switch to off position to enter manual mode so you can project laser lines according to multiple scenarios, ideal for paving tiles, installing doors, windows or furniture, hanging wallpaper, etc.

Product description

Description:

The module (MicroSD Card Adapter) is a Micro SD card reader module for reading and writing through the file system and the SPI interface driver,

SCM system can be completed within a file MicroSD card

Support Micro SD Card, Micro SDHC card (high speed card)

Level conversion circuit board that can interface level is 5V or 3.3V

Power supply is 4.5V ~ 5.5V, 3.3V voltage regulator circuit board

Communications interface is a standard SPI interface

4 M2 screws positioning holes for easy installation

Control Interface: A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground,

VCC is the power supply, MISO, MOSI, SCK for SPI bus, CS is the chip select signal pin;

3.3V regulator circuit: LDO regulator output 3.3V for level conversion chip, Micro SD card supply;

Level conversion circuit: Micro SD card to signal the direction of converts 3.3V, MicroSD card interface to control the direction of the MISO signal is also converted to 3.3V, general AVR microcontroller systems can read the signal;

Micro SD card connector: self bomb deck, easy card insertion.

Positioning holes: 4 M2 screws positioning holes with a diameter of 2.2mm, so the module is easy to install positioning, to achieve inter-module combination.



Package Included:

5* Micro SD TF Card Adater Reader Module

• The module (MicroSD Card Adapter) is a Micro SD card reader module for reading and writing through the file system and the SPI interface driver.
• SCM system can be completed within a file MicroSD card .Support Micro SD Card, Micro SDHC card (high speed card).
• 3.3V regulator circuit: LDO regulator output 3.3V for level conversion chip, Micro SD card supply.
• Level conversion circuit: Micro SD card to signal the direction of converts 3.3V, MicroSD card interface to control the direction of the MISO signal is also converted to 3.3V, general AVR microcontroller systems can read the signal.
• Positioning holes: 4 M2 screws positioning holes with a diameter of 2.2mm, so the module is easy to install positioning, to achieve inter-module combination.

User questions & answers

Question:	Do these now support multiple devices on the same SPI bus? 4 years ago post says no
Answer:	Typically a SPI bus can handle multiple devices where each device has its own /CS. The issues involve hardware /CS and software control of the devices. An option may be to use a 2line to 4line gated decoder (74ls139) wiring the /CS(pin4UNO or pin53Mega) is wired to the /Gate the 2inputs wired to two DOut pins to select 1 of 4 /CS connected devices. If using a RTOS, contention is an issue and would require a semaphore. If using std library packages, you would have to add a couple digitalWrite() statements before the packaged SPI operations to enable the selected /CS for that device.
Question:	Will this work with an Arduino Nano
Answer:	Yes, worked for me!
Question:	What file systems are supported
Answer:	It depends on you operating system. The module (MicroSD Card Adapter) is a Micro SD card reader module for reading and writing through the file system and the SPI interface driver Installed on the arduino board.
Question:	Does this have a 3.3v regulator on board? Can it be fed with 5v & be regulated to 3.3v for its operation? Looks like it does. I just want to be sure
Answer:	Yes, I was able to successfully connect these Micro SD Cards to the 5V source of Arduino Nano boards for various applications. Mine all work fine! They have been in use continuously for weeks at a time to store data for temperature/humidity, voltage, and GPS logging devices with no issues.

• ▲HIGH VISIBILITY AND PRECISION - Tavool laser level(T06) is professionally designed!  Our laser level for construction takes the UPGRADED laser module to provide high precision laser and deliver maximum line laser visibility up to 100ft for INDOOR or OUTDOOR usage. T06 line laser with 3-beam vertical, horizontal and cross line laser with 2 times brighter than red lasers, its high precision and visibility could meet your any application,like picture hanging, construction, and decoration, etc.
• ▲SELF LEVELING & MANUAL MODE - MEET ANY APPLICATIONS! This cross line laser level with slide switch can be set to 2 modes: Locked and Unlocked mode. Under the self-leveling mode and its inclination angle≤4°, the laser will be leveled automatically in 2 seconds,if it exceeds the range, the laser beam will flash to remind you to adjust. In the state of manual mode, its self-leveling function is deactivated, 3-beam vertical, horizontal and cross line laser is fixed to use the device at any angle
• ▲Rechargeable Lithium Battery & Type-C Charging - Still worried about the battery working-life is not long enough? Our laser level is powered by a Built-in Li-ion Battery,it has a convenient TYPE-C charging port and indicators that show when the battery is running low. In addition, our line laser offers remarkable run time and lasts about 10 hours of continuous operation when fully charged, also can be directly plugged into any TYPE-C port such as laptop, car charger, mobile phone charger, etc.
• ▲EASY OPERATION - Simple to use, one switch operation. If you have tired of tedious operation steps, choose our green laser could save your lots of time and make your job easier. Simply slide the Pendulum to unlocked position the tool will instantly project a perfectly straight laser cross onto the wall, and it also has three laser beam(vertical laser line, horizontal laser line and cross laser line) for you to choose, which would meet your many usage. Choose one to save your time now!
• ▲ MAGNETIC BRACKET & PORTABLE DESIGN - This laser level self leveling can be affixed to most metal surfaces when using the 360° strong magnetic L shape bracket(included. It also can be mounted onto a 1/4"_20 tripod(Not Included). Its updated design could allow you to turn the laser level tool around at 360 degree in two using modes(unlock and unlocked),which more convenient to use. Besides, its shape is similar to cylindrical, so it is very easy to carry wherever you use it outdoor or indoor

Product features

Our T06 laser level is designed with three modules, which are brighter and have higher precision, you can switch between 3 types of lines: horizontal/vertical/cross line to satisfy your need. The maximum working distance of the machine is 100Ft. In addition, it is equipped with a>

What’s more is that we have equipped with a Type-C charging cable, you can use a power bank to charge it anytime anywhere. Adapted to home decoration, you can use it to decorate your room, reduce unnecessary hassle when measuring the height, the surface, the volume and pythagorean triangles.

Attention:

Avoid direct exposure of the laser beam to the eyes!!

ON/OFF Button

• Press the ON/OFF button for 2 seconds to open this level tool, then choose one mode to begin your laser work.

• This tool is rechargeable, please recharge it in time if you are not use for a long time.

Locked Mode

• 3 measurement modes with vertical laser line, horizontal laser line and cross laser line for your choose to use
• If you want to turn off the power, just need press the top button for 2 seconds, wall laser level would be closed

Unlocked Mode

• 3 measurement modes with vertical laser line, horizontal laser line and cross laser line.
• In this mode, this level laser would self leveling when located on an inclined surface within 4 °; if the surface inclines over 4 °, the laser will flash to indicate out-of-level condition to remind you to adjust the location of 3 laser level to a flatter place.

Steps 1:

If you want to paint the walls, please measure the distance between the side and top by using this laser tool,then begin your painting jobs!

Steps 2:

Firstly, using a vertical laser line for vertical painting, and then slowly move to the right for overall painting

Steps 3:

Then, using the horizontal line to check the results. Whether the results is accurate or not. If yes, the job is done wonderfully!

• Driver Current:15-20mA each
• Indication LED's for Relay output status
• IN: can be high or low level control relay
• Equiped with high-current relay, AC250V 10A ; DC30V 10A
• Standard interface that can be controlled directly by microcontroller (Compatible with , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)

User questions & answers

Question:	Will these trigger directly from a raspberry pi 3.3 volt i/o output? others that look identical actually state that they will
Answer:	They need 5 volts on the power pin to operate, but can be triggered from 3.3 volt logic. Look for my review for more details.
Question:	Has anyone used this to control a 36vdc 3.5a motor
Answer:	Have not used it specifically for that but it should easily handle on/off power for your motor. The relay is good for 10A
Question:	How do you configure it for a 3.3 volt logic level input and do you supply a schematic
Answer:	There's no way to set the module for 3.3 volts. It will work on a 3.3v microcontroller because it is a logic low that turns on the relay. In other words you turn it on by grounding the input pin. But you will still need 5 volts to power the relay module. You can find some more details about this in my review.
Question:	Hello, can I use a 5 volts 7 amps power supply, with this module? Thanks
Answer:	Yes

Product features

Specification:

1. Dimensions: 50.5mm * 38.5mm * 18.5mm

2. Weight: 31g

3. PCB color: black

4. board around with four fixed screw holes, hole diameter 3.1mm, easy to install and fixed

5. Relay selection of high-quality loose relay, single-pole double-throw. A common end, a normally open end, a normally closed end

6. Optocoupler isolation, good anti-interference

7. Low level pull-in, high-level release. Pull the status indicator light, release the status indicator is off

8. VCC for the system power, JD_VCC for the relay power. Plug in the jumper cap

Product description

This Liquid Level Controller Switch is based on the pumping and the detection of the pool (water tower) to control the water level to achieve control.

Relay Automation Controller:

Port 1 and 2:when water is full,it will power on;when water is not enough,it will power off; Port 2 and 3:when water is not enough,it will power on;when water is full,it will power off

Parameter:

Size: 60*44*23mm/2.36*1.72*0.91inch

Working voltage: DC 12V(AC 12V)

AC Loading: 250VAC

DC Loading: 30VDC

Weight: 28g/1oz

Characteristics: 

Small Size

Simple Wiring

Low Power Consumption

High Switching Capacity

Interference is Strong

Functional Stability

Application:

Home water tower automatic water supply system.

Aquarium fish tank water changer system.

Conductive liquid automatic control.

Automatic feeding system for poultry and livestock.

Farm automatic water supply system.

And other occasions that require automatic water supply and water exchange.

Solenoid valve water pump motor automatic control.

• 【Automatic Relay Controller】: It is designed according to the actual needs of home, business, etc. Port 1 and 2: when water is full,it will power on; when water is not enough, it will power off; Port 2 and 3: when water is not enough, it will power on; when water is full, it will power off. Achieve automatic control of pumping.
• 【Characteristics of the Module】: Small size, simple wiring, low power consumption, high switching capacity, interference is strong, functional stability characteristics.
• 【Widely Use】: This water level detection sensor module can be used in pond water tank, garage, basement flooding rains place where automatic drainage, etc.
• 【Probe not Included】: Don’t need to buy another probe, you can use the household wire as the probe.
• 【Perfect After-Sale Service】: Any issues, please do not hesitate to contact us directly for further help. WHDTS has long been engaged in Electronics Related Products wholesale and retail business. Welcome letter to discuss the wholesale business. The bigger the amount is, the more favorable the price is.

User questions & answers

Question:	I carefully checked the datasheet of the relay and can't find the octocoupler anywhere in the datasheet or on the board, no octocoupler am I right
Answer:	Correct, a standard relay + LEDs
Question:	Does this take a low or a high to turn it on? Active low or active high
Answer:	Since there are both normally open and normally closed contacts, you can get "on" with either logic high or low, correct?
Question:	can this be used to take a 5v low current input from an arduino and then activate a 6v (powerwheels battery) with a higher current wired to motor
Answer:	yes===that is what it is for
Question:	What is the overall size of this relay. It look smaller that the sizes given
Answer:	It's about 5/8'' X 3/4'' X 1 3/4''.

• ★This Relay Board Maximum load: AC 250V/10A, DC 30V/10A With power and relay action indicator.
• ★Using SMD optocoupler isolation, strong driving capability, stable performance.
• ★The module can be set high or low triggered by jumper.
• ★Fault-tolerant design, even if the control line is broken, the relay will not move.
• ★All interfaces can be directly wired out through the terminals.

User questions & answers

Question:	what is the trigger signal voltage and duration required
Answer:	You can set the trigger for high, which is 5v for many Arduinos, or you can set it low, which is about 3v, for other types of microcontrollers. The duration required is the same as the length of time you want the relay active. It's only works when there's a signal on it, it doesn't latch closed.

Product features

Specification:

• Material: Circuit board
• Control signal: TTL
• Maximum load: AC 250V/10A, DC 30V/10A
• It is low level trigger when jumper connect to LOW pin
• It is high level trigger when jumper connect to HIGH pin
• NO: normally open relay interface；the relay is suspended before the suction, and it is short-circuited with COM after the suction.
• COM: Common Interface Relays
• NC: normally closed relay interface；and the relay is shorted to COM before the suction is closed.

Output Connection:

• NO: Normally Open
• COM: Common
• NC: Normally Closed
• Control signal: TTL

LED Indicator Light:

• Power Indicator: Green
• Indicator of Relay Status: Red
• Trigger Current: 5mA
• Size: 1.9*1.02* 0.72in(50*26*18.5mm)

Input Connection :

• DC+: positive power supply (VCC)
• DC-: negative power supply (GND)
• IN: can be high or low level control relay

Package included: 8 x DaFuRui DC 12V 1 Channel Relay Module

Product description

Using custom patented sensor technology, SmartTool has been the digital level leader for over 20 years.  Displaying in degrees, % slope or inches per foot, it is accurate to 1/10 of a degree and holds the best accuracy of any digital level on the market that MD has tested.  Its 9V battery (included) runs for over 500 hours and has the ability to beep at any angle you choose.

• Patented sensor technology
• Measures in inches and feet
• Accurate to 1/10 of a degree
• Set a beep for any desired angle
• 9V battery included

User questions & answers

Question:	Can this level be set to beep at certain degree other then 90 or 180? For example at 40 degrees
Answer:	Yes the GMS120 can scan through stucco. This is the coolest scanner I have ever owned. It seems like something out of Star Trek. I really like the LED display and the Bosch scanner has a nice hole in the middle so one can precisely mark the center location with a pencil.
Question:	Is the plump function also displayed as a digital readout
Answer:	Yes, the GMS120 can detect rafters through asphalt and/ or metal roofing up to 1-1/2". For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.
Question:	Does it have either a magnetic rail or a magnetically conducting body? Or is it all aluminum, no magnetic rail
Answer:	Thank you for your question. The GMS120 will not detect plastic pipes. However, the D-tect 120 will detect plastic pipes up to 2 3/8" deep. http://www.amazon.com/Bosch-D-TECT-120-Detection-Scanner/dp/B00SWIHA1E If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499)
Question:	Will this tool read in 1/16ths
Answer:	The answer is provided by the manual at http://www.bosch-professional.com/gb/en/gms-120-23317-ocs-p/which specifies:Digital Detector GMS 120Article number 3 601 K81 0..Maximum scanning depth*- Ferrous metals - 120mm- Non-ferrous metals (copper) - 80mm- Live conductors 110-230 V - 50mm(voltage applied)**- Wood - 38mmRegards,Mikhail

Product description

Specification:

Material: Circuit board

Control signal: TTL

Maximum load: AC 250V/10A, DC 30V/10A

Trigger Current: 5mA

Size: 1.9*1.02* 0.72in(50*26*18.5mm)

Input Connection:

VCC: Relay power supply +

GND: Relay power supply -

IN: Signal trigger input (High or Low Level Signal, select via jumper)

Output Connection:

NO: Relay normally open.

COM: Relay Common Pin

NC: Relay normally closed.

Package Included：

6* 5V 1 Channel Relay Module

• The Relay Board Maximum load: AC 250V/10A, DC 30V/10A;Trigger current of opto-isolator: 5mA. 商品特性
• Using SMD optocoupler isolation, strong driving capability, stable performance.
• Can be set high or low level trigger with jumper cap, to meet the demand of more trigger applications.
• Fault-tolerant design, even if the control line is broken, the relay will not move.
• Wide Application,The relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc.