Features: 100% brand new and high quality High quality dual panel design with power indication and TTL signal output; With DO switching signal (TTL) output and AO analog signal output; TTL output valid signal is low. When the output is low the signal light can be directly connected with the single chip microcomputer or relay module. Analog output voltage the higher the concentration the higher the voltage. Has better sensitivity detection for the gas natural gas Four screw holes for easy positioning; Has a long life and reliable stability Fast response recovery characteristics Application: For harmful gas family environment detection device is suitable for the detection of the ammonia aromatic compounds sulfide benzene vapor smoke and other harmful gas gas sensitive element concentration range: 10 to 1000ppm provides reference cases. Specifications: Input voltage: DC5V power (current): 150mA DO output: TTL 0.1 and 5V AO output: 0.1-0.3V (relatively no polluting) the maximum Voltage is about 4V Board Color: Blue Board Size: 32 (L) *20 (W) *22 (H) Package Includes: 1* MQ-5 Methane Liquefied Gas Detection Detector Module