The MQ-6 gas sensor offers high sensitivity to LPG, isobutane, propane, and other flammable gases, making it perfect for safety alarms, leak detection, and smart home applications. With both analog and digital outputs, it provides accurate concentration measurement and quick threshold-based alerts.
Technical Specifications
Core Specifications
Target Gases: LPG, Isobutane, Propane, Butane, Natural Gas
Detection Range: 300 – 10,000 ppm (LPG/propane)
Operating Voltage: 5 V ± 0.1 V
Output Signals:
Analog (0–5 V): Gas concentration (ppm level)
Digital (TTL): Adjustable threshold trigger
Response Time: <10 s
Electrical & Physical
Heater Current: ≈150 mA (preheat required)
Sensitivity Adjustment: Onboard potentiometer
Sensor Type: Metal Oxide Semiconductor (SnO₂)
Dimensions: Approx. 35 mm × 20 mm × 22 mm
Interface: 4-pin header (VCC, GND, AO, DO)
Environmental
Operating Temperature: –10 °C to 50 °C
Preheat Time: ≥24 h for initial calibration
Why Choose the MQ-6?
✔ Focused Detection – Optimized for LPG/propane/isobutane leaks
✔ Fast Response – Detects gas presence in seconds
✔ Arduino & Raspberry Pi Friendly – Easy integration with popular microcontrollers
Critical Uses
Home & kitchen LPG leak alarms
Industrial propane safety systems
Portable gas detectors
Smart ventilation and HVAC controls
Pro Tips
Calibrate in clean air before deployment.
Avoid continuous high-heat operation (>48 h) to extend sensor life.
Pair with a solenoid shutoff valve for automatic gas supply control.
Package Includes
1 × MQ-6 Gas Sensor Module