MQ-4 Methane CNG Gas Sensor Module

Specification:
Power Supply: 5 Volts
Interface Type: Analog & Digital
High Sensitivity to Methane & small sensitivity to smoke & alcohol
Low Cost.
Stable & Long Life.
On board Power indication
The instruction of Wiring: 
VCC: positive power supply (5V) 
GND: power supply is negative
 DO: TTL switching signal output
AO: analog signal output
Module Applications: 
Suitable for home or factory methane gas , natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm.
Package Includes:
1 X MQ-4 Gas Sensor
 
 
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