1PCS MQ-3 Alcohol Ethanol Sensor Breath Gas Detector Ethanol Detection M7
Module Applications: Other places ethanol vapor detection of alcohol ( ethanol ) testing, field testing for motor vehicle drivers and other non- drinking and operating personnel Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions ; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , analog output voltage , the higher the concentration the higher the voltage . 5 , for the detection of alcohol have better sensitivity. 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9.
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