MQ3 Alcohol Detector Gas Sensor UART Have DO switch signal(TTL) output

Have DO switch signal(TTL) output and AO analog signal output

the sensitivity is adjustable

Original FT232 chip

with power indicator and TTL signal output instructions

• With shielded case

MQ3 Alcohol Detector Gas Sensor UART Have DO switch signal(TTL) outputFeatures: High quality double panel design, with power indicator and TTL output signal. Have DO switch signal(TTL) output and AO analog signal output. TTL output signal for low level effectively. (when the low output electric signal lights at ordinary times, can directly connect single chip microcomputer or relay module) Analog output voltage with concentration, the higher concentration, the higher voltage. Has better sensitivity with the liquefied