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2015NEW KEYESTUDIO MQ-7 Carbon Monoxide Gas Sensor MQ-7

2015NEW KEYESTUDIO MQ-7 Carbon Monoxide Gas Sensor MQ-7

SKU: 420344
  • US$4.92
  • 4.74
  • Free shipping To

  • Form Color:


2015NEW KEYESTUDIO MQ-7 Carbon Monoxide Gas Sensor MQ-7
2015NEW KEYESTUDIO MQ-7 Carbon Monoxide Gas Sensor MQ-7

2015NEW KEYESTUDIO MQ-7 Carbon Monoxide Gas Sensor MQ-7

US$4.74 US$4.92 0 (0 reviews)
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The gas sensitive material used in MQ-7 gas sensor is SnO2, which is of lower electrical conductivity in clean air. It detects carbon monoxide with low temperature (heated by 1.5V) through high-low temperature cycles. The electrical conductivity of the sensor increases with the increase of the carbon monoxide concentration in the air. The change of electrical conductivity can be converted to the output signal corresponding to that of the gas concentration by using a simple circuit. The sensitivity of MQ-7 gas sensor to carbon monoxide is quite high, so it can be used to detect various gas containing carbon monoxide. It is a low-cost sensor suitable for a variety of applications.
Quantity1 set
Form ColorBlack
ApplicationArduino learning
Working Voltage DC 3.3V-5V
English Manual / SpecNo
Download Link
Other Features
Other FeaturesSpecification: Working voltage: DC 3.3V-5V Working current: 20mA Working temperature: 1050 IO Interface: 3 wire interface (-/+/S/) Target gas: carbon monoxide Detectable concentration: 300-10000ppm CO Loop voltage Vc 10V DC Heating voltage VH 5.0V±0.2V ACorDC(hight); 1.5V±0.1V ACorDC(low) Load resistance RL adjustable Heating resistance RH 31±3(Room temperature) Heating power PH 350mW Surface resistance of sensitive material Rs 2K-20K(in100ppmCO) Sensitivity S Rs(in air)/Rs(100ppmCO)5 Concentration slope: 0.6(R300ppm/R100ppm CO) Temperature, humidity: 20±265%±5%RH Standard test circuit: Vc:5.0V±0.1VVH(high): 5.0V±0.1VVH(low): 1.5V±0.1V
Dimensions & Weight
Dimensions 2.05 in x 0.83 in x 0.51 in (5.2 cm x 2.1 cm x 1.3 cm)
Weight 0.21 oz (6 g)
Packing List
1 x MQ-7 carbon monoxide gas sensor

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