MQ-2 Gas and Smoke Sensor Module
Sensors and Modules
₹120
The MQ-2 Gas and Smoke Sensor is a versatile and highly sensitive module essential for building environmental safety systems and early warning alarms. It is widely used in hobbyist and professional applications alike for detecting gas leaks or the presence of smoke in the surrounding air. With both an adjustable digital output for simple threshold triggering and an analog output for measuring gas concentration levels, it offers excellent flexibility. It is incredibly easy to wire up to any 5V microcontroller, making it a reliable addition to your custom IoT smart home or workshop security projects. Target Gases: LPG, Propane, Methane, Alcohol, Hydrogen, Smoke Operating Voltage: 5V DC Output Type: Analog & Digital
Detailed Specifications
The MQ-2 Gas Sensor utilizes a built-in heating element (SnO2) to accurately detect the concentration of combustible gases and smoke. The onboard potentiometer allows you to easily adjust the sensitivity of the digital output, triggering an immediate response when gas levels cross your defined safety threshold. It is highly durable, offering a long lifespan and stable performance for continuous monitoring.
- Operating Voltage: 5V DC
- Operating Current: ~150mA (due to the internal heater)
- Detectable Gases: LPG, i-butane, propane, methane, alcohol, hydrogen, and smoke
- Sensing Range: 300 to 10,000 ppm (parts per million)
- Output Signal: Analog Output (A0) and Digital Output (D0)
- Preheat Time: >20 seconds (for stable and accurate readings)
- Dimensions: 32 mm x 20 mm x 22 mm
Pinout Configuration:
- VCC: 5V Power Supply
- GND: Ground
- D0: Digital Output (High/Low based on potentiometer threshold)
- A0: Analog Output (Voltage varies with gas concentration)
Suggested to buy with: 🛒 5V Active Buzzer Module | 🛒 Arduino Uno R3 | 🛒 Female-to-Male Jumper Wires
