MQ7 Carbon Monoxide Gas Sensor Module for Arduino / Raspberry Pi

Features: Gas Sensor Module Testing gas: Carbon Monoxide Detection of concentration: 10-1000ppmCO Loop voltage: 10V DC Heater voltage: 5V?0.2V ACorDC(high), 1.5V?0.1V ACorDC(low) Load resistance: adjustable Heating resistor: 31?3(indoor temperature) Heating dissipation: 350mW Sensitive part surface resistance: 2K-20K Sensitivity: Rs(in air)/Rs(100ppmCO)5 Concentration gradient: 0.6 Temperature, humidity: 20?2, 65%?5%RH Standard test circuit: Vc: 5v ?0.1v, Vh(high): 5v ?0.1v, Vh(low): 1.5v ?0.1v Condition: New

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