MQ-4 Gas Sensor Module

Features:

• Dual-way Signal Output, Analog output and TTL level outputHigh sensitivity to LPG, gas, alcohol, hydrogen and more
• Fast response and recovery
• Good steadiness and long service life
• Great for home or factory gas leakage detection
• Use for Detecting: Combustible gas such as LPG, butane, methane, alcohol, propane, hydrogen, smoke, etc

Specification:

• Main chip:MQ-4 gas sensor module
• Working Voltage: 5V For DC
• Detecting Range: 300 to 10000ppm
• TTL output valid signal is low