1/2/5/10/20pcs Quality MQ-7 MQ7 Carbon Monoxide CO Gas Sensor Module For Arduino
USD 4.62 USD
Specifications
| Amount | 1 Pcs |
| Brand | Unbranded |
| Country/Region Of Manufacture | China |
The gas sensitive material used in the MQ-7 gas sensor is tin dioxide (SnO2) which has a low conductivity in clean air. There are different resistance values for different concentrations, and the change in conductivity can be converted to an output signal corresponding to the concentration of that gas using a simple circuit.