MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor Detecting MQ Sensor DIY for Safety Detection System
$4.36
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Size Conversion
Inches
Centimeters
Please according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.
Overview
– The gas sensing material used in the MQ-4B methane sensor is tin dioxide (SnO2) with lower conductivity in clean air. When there is a flammable gas in the environment where the sensor is located, the conductivity of the sensor increases as the concentration of flammable gas in the air increases. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit.
– The MQ-4B methane sensor has high sensitivity to methane and strong anti-interference ability to alcohol and other disturbing gases.
Characteristics
This product has good sensitivity to methane in a wide concentration range, and has the advantages of long life, low cost, and simple driving circuit.
Application
Widely used in household gas leak alarms, industrial combustible gas alarms and portable gas detectors
Basic Circuit
The figure above shows the basic test circuit for the MQ-4B sensor. The sensor requires two voltages to be applied:heater voltage (VH) and test voltage (VC). The VH is used to provide a specific operating temperature for the sensor, either DC or AC. The VRL is the voltage across the load resistor (RL) of the sensor in series. VC is the voltage for testing the load resistor RL and requires a DC power supply.
Package Included
1 x MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor
Weight | 0.002 kg |
---|
Customers Also Viewed
433MHz 100M Wireless Transceiver Module Kit Transmitter + Receiver + 2pcs Copper Spring Antenna
$8.73Smart ModuleAdd to cartDescriptionSTX882 ASK Wireless Remote Control Transmitter ModuleSTX882 is a ASK transmitter module with small size, ultra high power, low harmonics. With high stability, it can be achieved at 50mW power when the voltage is 3.6V, it is the maximum transmitter power module under the the same voltage in the market. Data port of the module …
5V 3.3V FT232RL USB Module To Serial 232 Adapter Download Cable
$10.92Other Module BoardAdd to cart5V 3.3V FT232RL USB Module To Serial 232 Adapter Download Cable ForFeature1. With FT232RL chipset, support 3.3V, 5V2. With over current protection, using 500MA self-restore fuse3. RXD/TXD transceiver communication indicator4. Pin definition:DTR,RXD,TX,VCC,CTS,GNDPackage included1 x USB Module
12V/220V 2CH HIFI Audio Stereo Power Amplifier Bass bluetooth FM Radio Car Home
$74.91Solar CollectorsAdd to cartSpecificationsColo:BlackModel:G30Input voltage:AC 220V/ DC12V(in car)Plug:EU plug(sent with an adapter according to your country)bluetooth:SupportRMS power:18W x2Peak power:45W x2Load impedance:4-16ΩSNR:85 dbFM frequency:87.5-108MHzDistoration rate:0.05%Frequency:10Hz-20KHzSize:Approx. 19×12.5×4.5cm/ 7.48×4.92×1.77inchFeatures-Mini HIFI digital bluetooth audio power amplifier.-TF Card, AUX, U disk, MP3 format play, support bluetooth wireless connection.-Supports FM stereo radio.-With treble, bass, and volume control, very easy to use.-Low distortion supplies a …
12V/220V 2CH HIFI Audio Stereo Power Amplifier Bass bluetooth FM Radio Car HomeRead More
KY-011 5mm 2 Color Red and Green LED Common Cathode Module Board for Arduno Diy Starter Kit 2-color KY011
$4.36LED BoardAdd to cartSpecificationsColor:Green + RedDiameter:5mmPackage Type:DiffusionVoltage:2.0-2.5vCurrent:10mAViewing angle:150 degreeWavelength:571 +644 nmLuminous intensity (MCD):20-40; 40-80Stent type:long-leggedPackage Included1 x KY-011 Two Color Red and Green LED Module for Arduno
1000Pcs 5 Colors 3mm F3 Ultra Bright Round LED Diode Kit
$19.67Electronic Accessories & SuppliesAdd to cart1000Pcs 5 Colors 3mm F3 Ultra Bright Round LED Diode Kit Red / Green / Blue / White / YellowParameterWorking current:20 (mA)Working voltage:Red:1.9V-2.1V Yellow:1.9V-2.1V Blue:3.0V-3.2V Green:3.0V-3.2V White:3.0V-3.2VMCD:Red:1000-1500 Yellow:700-900 Blue:2000-3000 Green:7000-9000 White:6000-8000Wave length:Red:620-625 Yellow:588-590 Blue:455-465 Green:567-570 White:Color temperature 8000Each colors 200Pcs, total 1000PcsPackage included2 x 500Pcs 5 Colors LED Diode kit
4 Digit LED Display Tube 7 Segments TM1637 50x19mm Blue Clock Display Colon Module
$13.11Display ScreenAdd to cartFeatureThis is a basic 4-digit 7-segment display module.The display features double points in midle. The decimal point per digit not active.Module connecting to digital I/O on 2 pins.For Arduino use library:TM1637.hPackage includes1 x LED Display TubeSketch include inchTM1637.hinch // include the TM1637 libraryTM1637 display(2, 3);// // initialize the library for pins 2, 3void setup()void loop()
DIY LED Light String Kit Part for Lego 10267 House Model Building Gingerbread Flash
$69.97DIY Electronic KitsAdd to cartSpecification1. Name:LED Light Set2. Model:D858093. Material:Plastic4. Power:Less Than 5V5. Fitment:For Lego 10267Note1. LED Light Set Only. Toy is not included.2. Manual installtion. It needs to be assembled by yourself.Package Included10 x 15cm Bit Light(Warm White)1 x 15cm Enhance Bit Light(Warm White)4 x 30cm Flashing Bit Light(Red)4 x 30cm Flashing Bit Light(White)1 x Multi Colour Light …
DIY LED Light String Kit Part for Lego 10267 House Model Building Gingerbread FlashRead More
Reviews
There are no reviews yet.