MQ7 sensor unit for carbon dioxide detection gas

MQ-7 Carbon monoxide and carbon monoxide gas sensors generated from fires and car exhausts and coal burning Additional information Specifications (Carbon monoxide sensor | MQ-7): Heating voltage: 5 volts Current draw: 140 milliamps Detection accuracy of concentrations: 10 – 1000 ppm Power consumption: 0.7 watts Operating temperature: -10 – 50 degrees Celsius Operating humidity: 95% RH Dimensions: 35*20*11 mm Weight: 4.8 grams