Adopts high quality of RF-04 double sided material.
Area: 5cm x 4cm nickel plate on side,
Anti-oxidation, anti-conductivity, with long use time;
Comparator output signal clean waveform is good, driving ability, over 15mA;
Potentiometer adjust the sensitivity;
Working voltage 5V;
Output format: Digital switching output (0 and 1) and analog voltage output AO;
With bolt holes for easy installation;
Small board PCB size: 3.2cm x 1.4cm;
Uses a wide voltage LM393 comparator
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