Taidacent Non-Contact Liquid Level Sensor Externally Attached Liquid Induction Level Switch Water Level Switch (NPN Output(5-12V)) NPN Output(5-12V) wix amplifiers box

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Taidacent Non-Contact Liquid Level Sensor Externally Attached Liquid Induction Level Switch Water Level Switch (NPN Output(5-12V)) NPN Output(5-12V) wix amplifiers boxTaidacent Non Contact Liquid Level Sensor Externally Attached Liquid Induction Level Switch Water Level Switch (NPN Output(5 12V)) NPN output drives small electric relays (coil current 100mA) working principle: 1. When the black line is suspended, it is normally open output: When liquid is sensed, the transistor is turned on and closed, and the relay is energized and closed; When no liquid is sensed, the transistor will be cut off and the relay will