MQ-2 Gas Sensor

MQ-2 Gas Sensor

The gas sensing material used in the MQ-2 gas sensor is tin dioxide (SnO2), which has low conductivity in clean air. When there is flammable gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the flammable gas concentration in the air.

The MQ-2 gas sensor has a high sensitivity to liquefied gas, propane, and hydrogen, and is also ideal for the detection of natural gas and other combustible vapors. This sensor can detect a variety of flammable gases and is a low-cost sensor suitable for a variety of applications.

User Manual / Datasheet / Example Codes Etc.

Features

• Sensitive for LPG, propane, hydrogen
• Output voltage boosts along with the concentration of the measured gases increases
• Fast response and recovery
• Features boost circuit
• Adjustable sensitivity
• Signal output indicator

Specifications

• Boost chip: PT1301
• Power: 2.5V ~ 5.0V
• Dimension: 40.0mm * 21.0mm
• Mounting holes size: 2.0mm

Package Includes

• MQ-2 Gas Sensor x1
• 4-pin custom connector jumper wire x1

Applications

• Gas leakage detector

How To Use

In the case of working with a MCU:

• VCC ↔ 2.5V ~ 5.0V
• GND ↔ power supply ground
• AOUT ↔ MCU.IO (analog output)
• DOUT ↔ MCU.IO (digital output)