MQ-2 gas sensor is widely used to detect gases like methane (CH₄), liquefied petroleum gas (LPG), carbon monoxide (CO), and smoke. It works by sensing changes in the air's gas concentration and providing an analog output. The MQ-2 sensor is especially popular in applications such as safety systems for gas leakage detection, home automation, and environmental monitoring.
Specification
- Detection Range:
- Methane: 200 to 10,000 ppm
LPG: 300 to 10,000 ppm
Carbon Monoxide: 10 to 1,000 ppm
Smoke: 1 to 1,000 ppm
- Voltage: 5V (working voltage)
- Response Time: Typically under 10 seconds
- Heater Resistance: 31Ω ± 3Ω (with internal heater)
- Sensor Type: Metal Oxide Semiconductor (MOS)
Applications
- Gas Leak Detection: Common in homes, industries, and vehicles to detect harmful gas leaks.
- Fire Alarm Systems: Can be integrated into smoke detection systems.
- Air Quality Monitoring: Detects methane or LPG concentrations in closed environments.
