1, on-board LM393 voltage comparator chip and hall sensing probe
2, support 5 V / 3.3 V voltage input
3, on-board signal output, the output signal is effective instruction low level and at the same time, the output signal lights out can be directly and single-chip microcomputer IO connection
4, signal detection sensitivity can adjust
5, reserve all the way more circuits (P3 voltage drawn)
6, PCB board size: 30 (mm) x15 (mm)
1 x Hall switch sensor.