MQ-2 Gas Sensor Module

Overview

This is a highly responsive and very sensitive sensor, which is capable of detecting gases such as: butane, liquefied petroleum gas, propane, methane, alcohol, smoke, hydrogen and other harmful gases.

The MQ-2 gas sensor has a very reliable stability and is highly sensitive to smoke, natural gas, and methane gas in the air.

The gas-sensitive material used in MQ-2 gas sensor is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the combustible gas concentration in the air. Using a simple circuit, the change in conductivity can be converted into an output signal corresponding to the gas concentration. MQ-2 gas sensor has high sensitivity to liquefied gas, propane and hydrogen, and it is also ideal for detecting 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.

Specifications

• Circuit Voltage: ≤15 V
• Heating Voltage: 5 V ± 0.2 V
• Load Resistance: adjustable
• Heating Power: ≤900 mW
• Operating Temperature: -10° C to +50° C
• Storage Temperature: -20° C to +70° C
• Relative Humidity:95 % RH

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