RAKSTORE 2pcs MQ-3 MQ3 Alcohol Ethanol Sensor Breath Gas Ethanol Detection
$4.99
Description
Working Voltage: DC 5V.With signal ouput instructions.Two-way signal output (TTL level output and analog output).TTL output effectively signal for low level(when the output low level signal lights, can directly connected microcomputer).Analog output 0 ~ 5V voltage, the higher the concentration, the higher the voltage.
