Description:MQ-7 CO Carbon Monoxide Coal Gas Sensor Module detects the concentrations of CO in the air and outputs its reading as an analogue voltage. The sensor can measure concentrations of 10 to 10,000 ppm. The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5..
Description:The sensitive material of the MQ-9 gas sensor is SnO2, which with lower conductivity in clean air. It makes detection by method of cycling high and low temperature and detects CO when low temperature (heated by 1.5V). The sensor's conductivity is higher along with the gas concentration r..