- It has a long life and reliable stability
- Testing gas as carbon monoxide
- The load resistance is adjustable
MQ7 Gas Sensor uses Testing gas as Carbon Monoxide. The Detection of concentration is 10-1000ppmCO. The Loop voltage is 10V DC and Heater voltage is 5V±0.2V ACorDC(high), 1.5V±0.1V ACorDC(low). The Load resistance is adjustable and Heating resistor is 31±3(indoor temperature).Heating dissipation is 350mW. The Sensitive part surface resistance is 2K-20K. The Sensitivity Rs(in air)/Rs(100ppmCO)5. The Standard test circuit is Vc: 5v ±0.1v, Vh(high): 5v ±0.1v, Vh(low): 1.5v ±0.1v
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