Description: This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.
This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.
This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board below.
Documentation and Downloads
![[FN-BC04] 4 Buttons Triggered MP3 Player Board with 10W Amplifier and Solder Pads](/web/image/product.product/5554/image_128/%5BFN-BC04%5D%204%20Buttons%20Triggered%20MP3%20Player%20Board%20with%2010W%20Amplifier%20and%20Solder%20Pads?unique=0bbe3f0)
![[FNM-705] High Quality PIR Motion Sensor Activated Audio Player](/web/image/product.product/5578/image_128/%5BFNM-705%5D%20High%20Quality%20PIR%20Motion%20Sensor%20Activated%20Audio%20Player?unique=a78496a)
![[FN-M22P] High Quality USB SD MP3 Sound Module](/web/image/product.product/5558/image_128/%5BFN-M22P%5D%20High%20Quality%20USB%20SD%20MP3%20Sound%20Module?unique=234d56f)
![[FN-M981] Low-cost MP3 Decoder Board with High Performance](/web/image/product.product/5549/image_128/%5BFN-M981%5D%20Low-cost%20MP3%20Decoder%20Board%20with%20High%20Performance?unique=9ad39fe)
![[FNP-703A] Mini PIR Motion Activated Audio Player](/web/image/product.product/5553/image_128/%5BFNP-703A%5D%20Mini%20PIR%20Motion%20Activated%20Audio%20Player?unique=d712093)
![[FNP-702A] SmartSound PIR Motion Activated Audio Player](/web/image/product.product/5552/image_128/%5BFNP-702A%5D%20SmartSound%20PIR%20Motion%20Activated%20Audio%20Player?unique=02d3fb3)
![[DEV-13746] SparkFun Beefy 3 - FTDI Basic Breakout](/web/image/product.product/6346/image_128/%5BDEV-13746%5D%20SparkFun%20Beefy%203%20-%20FTDI%20Basic%20Breakout?unique=b79a03b)
![[DEV-13770] SparkFun Block for Intel Edison - ADC](/web/image/product.product/6296/image_128/%5BDEV-13770%5D%20SparkFun%20Block%20for%20Intel%20Edison%20-%20ADC?unique=54d3638)
![[DD-14157] SparkFun Block for Intel Edison - Raspberry Pi B (with Headers)](/web/image/product.product/5939/image_128/%5BDD-14157%5D%20SparkFun%20Block%20for%20Intel%20Edison%20-%20Raspberry%20Pi%20B%20%28with%20Headers%29?unique=bc77f8e)
![[SEN-12041] SparkFun Capacitive Touch Breakout - AT42QT1010](/web/image/product.product/7247/image_128/%5BSEN-12041%5D%20SparkFun%20Capacitive%20Touch%20Breakout%20-%20AT42QT1010?unique=e0d1346)
![[SEN-14520] SparkFun Capacitive Touch Breakout - AT42QT1011](/web/image/product.product/7248/image_128/%5BSEN-14520%5D%20SparkFun%20Capacitive%20Touch%20Breakout%20-%20AT42QT1011?unique=885ed76)
![[BOB-14874] SparkFun Configurable OpAmp Board - TSH82](/web/image/product.product/7468/image_128/%5BBOB-14874%5D%20SparkFun%20Configurable%20OpAmp%20Board%20-%20TSH82?unique=ad124a4)
![[SEN-14348] SparkFun Environmental Combo Breakout - CCS811/BME280 (Qwiic)](/web/image/product.product/7355/image_128/%5BSEN-14348%5D%20SparkFun%20Environmental%20Combo%20Breakout%20-%20CCS811-BME280%20%28Qwiic%29?unique=72a4279)
![[GPS-14030] SparkFun Mini GPS Shield](/web/image/product.product/5985/image_128/%5BGPS-14030%5D%20SparkFun%20Mini%20GPS%20Shield?unique=b294c42)
![[BOB-09118] SparkFun Opto-isolator Breakout](/web/image/product.product/7405/image_128/%5BBOB-09118%5D%20SparkFun%20Opto-isolator%20Breakout?unique=eb2220e)
![[WRL-12823] SparkFun RFM69 Breakout (434MHz)](/web/image/product.product/5726/image_128/%5BWRL-12823%5D%20SparkFun%20RFM69%20Breakout%20%28434MHz%29?unique=3ba0b29)
![[WRL-12775] SparkFun RFM69 Breakout (915MHz)](/web/image/product.product/6298/image_128/%5BWRL-12775%5D%20SparkFun%20RFM69%20Breakout%20%28915MHz%29?unique=369c8fa)
![[DEV-13741] SparkFun RedStick](/web/image/product.product/5730/image_128/%5BDEV-13741%5D%20SparkFun%20RedStick?unique=79b21b1)
![[SEN-13322] SparkFun Soil Moisture Sensor](/web/image/product.product/7088/image_128/%5BSEN-13322%5D%20SparkFun%20Soil%20Moisture%20Sensor?unique=a0f9a8d)
![[SEN-13637] SparkFun Soil Moisture Sensor (with Screw Terminals)](/web/image/product.product/6253/image_128/%5BSEN-13637%5D%20SparkFun%20Soil%20Moisture%20Sensor%20%28with%20Screw%20Terminals%29?unique=7940258)
![[LCD-14048] SparkFun TeensyView](/web/image/product.product/6098/image_128/%5BLCD-14048%5D%20SparkFun%20TeensyView?unique=2aea746)
![[DEV-13956] SparkFun Weather Shield](/web/image/product.product/5933/image_128/%5BDEV-13956%5D%20SparkFun%20Weather%20Shield?unique=1066ebc)
![[DEV-12761] SparkFun microSD Shield](/web/image/product.product/5892/image_128/%5BDEV-12761%5D%20SparkFun%20microSD%20Shield?unique=412d2ca)