HiLetgo MQ-2 Gas Sensor MQ2 Smoke Sensor Methane Gas Detection for Arduino

MQ-2 Gas Sensor Module Smoke Methane Butane Detection for Arduino
Description:
1. size: 32mmX22mmX27mm
2. Chip: LM393, ZYMQ-2 gas sensors
3. Working voltage: DC 5V
Characteristics:
1. with a signal output instruction.
2. Dual signal output (analog output, and TTL level output)
3. TTL output
4. 0~5V analog output voltage, the higher the concentration the higher the voltage.
5. The gas, natural gas, city gas, smoke better sensitivity.
6. With a long service life and reliable stability.
7. Rapid response and recovery characteristics.