1. The sensor USES the high quality FR – 04 double material, large area of 5.5 x 4.0 CM, treatment of nickel plating and surface, have fight oxidation, electrical conductivity, and life has more superior performance;

2. With potentiometer sensitivity adjustment;

3. The output format: Digital switch output (0 and 1) and analog AO voltage output;

4. Has a fixed bolt hole, convenient installation;

5. The comparator output, signal clean, good waveform, driving ability is strong, for more than 15 mA;

6. The LM393, use of wide voltage comparator;

7. The working voltage of 3.3 V to 5 V;