DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Electronic KIT Alcohol concentration alarm circuit This circuit is mainly an alarm control circuit formed by the gas sensor group MQ-3. When the sensor MQ-3 is in the environment where alcohol vapor … نعتذر الشراء من الموقع متوقف مؤقتا We apologize : purchasing from our website is temporarily stopped
