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Often times
Piezos can be used both to play tones and to detect tones
Receptacle Depth: 6 mm
such as cooling system
6VDC supply range
Hydrogen Sensor MQ8 (Digital/Analog) 74HC00N Often timesThis sensor has a high sensitivity and fast response time. It is suitable for sensing hydrogen concentrations in the air. The MQ 8 can detect hydrogen gas concentrations anywhere from 100 10000ppm. The sensor can output an analog or digital signal. The sensitivity can be adjusted by the potentiometer. They are used in gas leakage detecting equipments in home and industry applications. Specification Power supply needs: 5V Interface type: Analog Digital