MQ-4 Gas Methane (CNG) Detector Sensor Module mq4

Description

1. Detecting range: 300~10000ppm
2. Signal output indicator.
3. Dual Signal output (analog output and TTL output).
4. The TTL output signal is low level, allows us to connect with SCM directly.
5. Analog output 0~5V voltage.
6. Quick response and recovery.