MQ-2 Gas Sensor – Smoke, LPG, Methane, and Hydrogen Detection Module The MQ-2 Gas Sensor is a versatile and reliable gas detection module designed for monitoring combustible gases and smoke levels in various applications. It is ideal for home safety systems, industrial gas leak detection, and IoT-based air quality monitoring. With a high sensitivity to gases like LPG, methane, hydrogen, smoke, propane, alcohol, and carbon monoxide, this sensor provides both analog and digital outputs for easy interfacing with microcontrollers like Arduino, ESP32, and Raspberry Pi. Key Features: Wide Detection Range: Capable of detecting multiple gases including LPG, methane, smoke, alcohol, hydrogen, and CO. High Sensitivity & Fast Response: Quickly detects the presence of harmful gases in the environment. Dual Output: Provides both analog (variable voltage) and digital (threshold-based) outputs. Adjustable Sensitivity: On-board potentiometer to fine-tune the digital output threshold. Easy to Use: Simple 4-pin interface for easy connection to development boards. Long Life & Low Cost: Durable sensor with stable performance and low power consumption. Product Specifications: Feature Specification Operating Voltage 5V DC Detection Gases LPG, Butane, Methane, Alcohol, Smoke, CO Output Type Analog & Digital Digital Output Threshold Adjustable via potentiometer Heater Resistance (RH) 31Ω ±3Ω Preheat Time 20 seconds (minimum) Operating Temperature -20°C to 50°C Dimensions 32mm x 20mm x 22mm (approx.) Applications: Home and Industrial Gas Leak Detection Smoke Detection in Fire Alarm Systems Smart Air Quality Monitoring Devices Kitchen Safety and Gas Detector Systems IoT and Embedded Projects
