MQ-7 Carbon Monoxide Sensor Module

From the shop's description

MQ-7 Carbon Monoxide Sensor Module This is an easy-to-use sensor for detecting Carbon Monoxide (CO), ideal for detecting concentrations of CO in the air. It can detect concentrations in the range of 20 to 2000ppm. The module has an analog output that comes from the voltage divider that forms the sensor and a load resistor. It also has a digital output that is calibrated with a potentiometer, this output has a led indicator. Features: High sensitivity to carbon monoxide. Stable and long life. Specification: Specification Value Input voltage 6.5 – 12 V Channels Two independent channels Output voltage 5V, 3.3V (adjustable via jumpers: 0V, 3.3V, 5V configuration) Output current Maximum 700 mA Power headers Onboard Berg male header for GND, 5V, 3.3V output Power switch ON-OFF switch available USB input USB Type-A input available DC input DC barrel jack input available Indicator Onboard power LED Dimensions 53 mm × 33 mm (L × W) Applications: Domestic CO gas leakage alarm. Portable gas detection equipment. CO detection in industry. Useful Links: MQ-7 Documentation Example Arduino project MQ-7 Arduino/AVR library Example IoT applied research utilizing the sensor