Smoke sensor Module MQ 2 (Digital/Analog)

The MQ-2 Smoke Sensor Module is a semiconductor-based gas sensor designed to detect a variety of flammable gases and smoke, including propane, methane, hydrogen, carbon monoxide, and LPG. It is particularly sensitive to propane and smoke, making it suitable for applications such as domestic gas leakage alarms, industrial flammable gas alarms, portable gas detectors, and air quality monitoring systems.

The module operates on a 5V power supply and features both analog and digital outputs, allowing for flexible integration into various systems. Its simple drive circuit and adjustable sensitivity via an onboard potentiometer make it user-friendly for both beginners and professionals. With a long operational life of 10 years and low power consumption, the MQ-2 is a reliable choice for ensuring safety and environmental monitoring, making it compatible with most of the commissioning modules including Raspberry Pi and Arduino.

Features:
Wide Detection Range: Sensitive to gases such as LPG, methane, propane, hydrogen, alcohol, and smoke, with a detection range between 300 to 10,000 ppm. ​
Dual Output: Provides both analog and digital outputs, facilitating integration with various microcontrollers and systems.​
Fast Response and High Sensitivity: Quickly reacts to the presence of target gases with high sensitivity, ensuring timely detection.​
Simple Drive Circuit: Requires a straightforward circuit design, making it user-friendly for both beginners and experienced developers.
Specifications:
Specification Value
Power Supply: 5 V
Current Consumption: 150 mA
Measuring Range: Up to 10,000 ppm
Operating Temperature: -20°C to 50°C
Output Type: Analog and Digital
Load Resistor: 1 kΩ (Pull-down to ground)
Connector Type: Goldpin
Pin Pitch: 2.54 mm
Board Dimensions: 36 × 20 × 23 mm
Mounting Hole Diameter: 3.2 mm