MQ4 Natural Gas Sensor Module

MQ-4 Natural Gas Methane Gas Sensor Module.

Features :

• Using high-quality dual-panel design, with power indicator and TTL signal output instructions ; The switching signal having a DO (TTL) output and analog output AO ;
• TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
• The higher the voltage , the concentration of the analog output voltage is higher.
• For methane, natural gas has a good detection sensitivity.
• There are four screw holes for easy positioning ;
• Dimensions : 32 (L) * 20 (W) * 22 (H)
• Rapid response and recovery characteristics
• Instruction of Wiring:
• VCC: positive power supply (5V)
• GND: power supply is negative
• DO: TTL switching signal output
• AO: analog signal output