MQ-2 Smoke & Combustible Gas Sensor
—The MQ-2 is a gas sensor that detects smoke, LPG, methane and other combustible gases, giving both an analogue level and a threshold digital output.
Specifications
- Detects LPG, propane, methane, hydrogen, smoke
- Analogue and digital outputs
- Adjustable digital threshold
- 5V supply with on-board heater
- Needs 24-48 hours burn-in for stable readings
What you can build with the MQ-2 Smoke & Combustible Gas Sensor
- Smoke and gas leak alarms
- Workshop and garage safety monitors
- Home Assistant gas alerts
- Classroom air-sensing experiments
Compatibility
Works with Arduino, ESP32 and Pico via the analogue input; a Raspberry Pi needs an external ADC. Treat it as an indicator, not a certified detector — a legally compliant smoke alarm is a separate device.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.
Availability: Sold out
The MQ-2 is a gas sensor that detects smoke, LPG, methane and other combustible gases, giving both an analogue level and a threshold digital output.
Specifications
- Detects LPG, propane, methane, hydrogen, smoke
- Analogue and digital outputs
- Adjustable digital threshold
- 5V supply with on-board heater
- Needs 24-48 hours burn-in for stable readings
What you can build with the MQ-2 Smoke & Combustible Gas Sensor
- Smoke and gas leak alarms
- Workshop and garage safety monitors
- Home Assistant gas alerts
- Classroom air-sensing experiments
Compatibility
Works with Arduino, ESP32 and Pico via the analogue input; a Raspberry Pi needs an external ADC. Treat it as an indicator, not a certified detector — a legally compliant smoke alarm is a separate device.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.