MQ-4 Methane CNG Gas Sensor Breakout Board - (AD42764)

Description:

This is a compressed natural gas (CNG) sensor Easy to use, suitable for detecting natural gas concentrations (primarily composed of methane [CH4]) in air. The MQ-4 can detect natural gas concentrations ranging from 200 to 10,000 ppm.

This sensor has high sensitivity and a fast response time. The sensor output is an analog resistor. The control circuit is very simple; all you have to do is supply the coil to the connector with 5V, add a load resistor, and connect the output to an ADC.

Documents:

- Datasheet

- Wiring Example

Link of interest: