MQ-2 Smoke & Gas Sensor Module for Arduino Sri Lanka

The MQ-2 Gas Sensor Module is a reliable and low-cost solution for detecting combustible gases such as LPG, Butane, Propane, Methane, Hydrogen, Smoke, and Natural Gas. Widely used in home safety systems, industrial gas leakage detection, and Arduino or ESP32/ESP8266 IoT projects in Sri Lanka, this sensor ensures quick response, stable performance, and long service life.

With both analog (AO) and digital (DO) outputs, the MQ-2 sensor is easy to interface with Arduino, Raspberry Pi, STM32, or relay modules. It is perfect for DIY electronics projects, safety monitoring devices, and automation systems.

Specifications:

Input Voltage: DC 5V

Power Consumption: ~150mA

DO Output: TTL digital (0 & 1)

AO Output: 0.1V – 4V (analog voltage)

High sensitivity to LPG, Propane, Hydrogen, Methane, Butane & Smoke

Response Time: Fast response & recovery

Long life and reliable stability

Four mounting holes for easy installation

Warm-up time: ~20 seconds

Applications in Sri Lanka:

✅ Gas leakage detectors (LPG, Butane, Propane, Methane)
✅ Smoke detection systems
✅ Industrial safety monitoring
✅ Arduino, ESP32, and Raspberry Pi IoT projects
✅ Smart home automation and alarms