100% Brand new and high quality sensor operating voltage: dc 5v driver ic: lm393, zymq-9 using high-quality dual-panel design, with power indicator and ttl signal output instructions; with a do switch signal (ttl) output and ao analogue signal output; ttl output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module) the analogue output voltage, the higher the concentration the higher the voltage. The hydrogen detection with better 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.
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