Description

MQ-4 Gas Sensor detects the concentration of methane gas in the environmental air and output the reading as an analog voltage. The concentration sensing range of 300 ppm to 10,000 ppm is suitable for leak detection. Signal conditioning circuit is used to convert the change of conductivity to correspond output signal with the input gas concentration. MQ-4 gas sensor has high sensitivity to Methane, also to Propane and Butane. The sensor could be used to detect different combustible gas, especially Methane; it is with low cost and suitable for different application.

• Analog and digital output
• Input Operating voltage: 5VDC
• High sensitivity to CH4, natural gas
• Small sensitivity to alcohol and smoke
• Stable and long life