Module Features: Wsing high-quality dual-panel design, with power indicator and TTL signal output instructions; With a DO switch signal (TTL) output and AO analog signal output; TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module) 0 ~ 5V analog output voltage, the higher the concentration the higher the voltage. The propane, butane, LPG, LNG has a good detection sensitivity. There are four screw holes for easy positioning; Product Dimensions: 32 (L) * 20 (W) * 22 (H) With a long service life and reliable stability Rapid response and recovery characteristics
