MQ2 Gas Sensor
KSh 650.00
In stock
The MQ-2 is a semiconductor gas sensor designed to detect combustible gases and smoke. It uses a tin dioxide (SnO₂) sensitive layer whose conductivity changes in the presence of target gases, allowing gas concentration to be measured as a change in voltage. The module version includes onboard signal conditioning components for easy interfacing with microcontrollers.
Key Features
- Sensitive to LPG, propane, methane, hydrogen, and smoke.
- Fast response and high sensitivity.
- Adjustable sensitivity via onboard potentiometer.
- Provides both analog and digital output signals
- Long service life and stable performance
- Onboard heater for sensor activation
Technical Specifications
- Sensor type: Semiconductor gas sensor (SnO₂)
- Target gases: LPG, butane, propane, methane, hydrogen, smoke
- Operating voltage: 5V DC
- Heater voltage: 5V DC
- Heater current: approx. 150–200mA
- Output types:
- Analog output (AO): proportional voltage
- Digital output (DO): threshold-based logic signal
- Load resistance: adjustable onboard
- Preheat time: recommended 20–30 seconds (initial burn-in longer)
- Operating temperature: –10°C to +50°C
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