The MQ-2 Smoke and Gas Sensor Module detects LPG, smoke, propane, methane, hydrogen and alcohol. It is the most popular sensor for gas leak and fire smoke alarms, giving an analog output for concentration and a digital output for alarms.
| Sensor | MQ-2 |
|---|---|
| Detects | LPG, smoke, propane, methane, H2, alcohol |
| Range | 300 – 10000 ppm |
| Supply voltage | 5V |
| Output | Analog (AO) + Digital (DO) |
| Adjustment | Potentiometer for sensitivity |
What is the operating voltage?
5V.
Does it need warm-up?
Yes, allow a few minutes after power-on (longer burn-in on first use).
Can I send SMS on gas leak?
Yes, combine it with a GSM module like SIM800L or A9G.
Can I buy the MQ2 Smoke and Gas Detector module in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
