Features:

• size: 32mmX22mmX27mm
• Chip: LM393, ZYMQ-2 gas sensors
• Working voltage: DC 5V
• with a signal output instruction.
• dual signal output (analog output, and TTL level output)
• TTL output
• 0~5V analog output voltage, the higher the concentration the higher the voltage.
• the gas, natural gas, city gas, smoke better sensitivity.
• with a long service life and reliable stability
• rapid response and recovery characteristics

Package Content

1x MQ2 gas sensors module

Arduino Connection

DataSheet

MQ2 Datasheet

Example Code for Arduino