1.DC+: module power supply,

2.DC-: module power supply;

3.VCC: sensor supply positive electrode,

4.IN: sensor signal input,

5.GND: sensor power supply negative

Module using method:

The hall sensor to obtain the pulse signal, as long as in the circumference of the rotating shaft, stick on a grain of magnet, let Hall switch near the magnet, the output signal, the rotating shaft rotates, it will continuously generates pulse signal output. That should be paid attention to in the magnetic steel is pasted and Hall sensor to the direction of the magnetic field sensitive, before stick can be manually close to a sensor, as to how close to a few times, digital tube can display speed; if there is no speed display, you can change a direction to try again.

Widely used in motor speed detection, pulse count, bicycle speed counting, etc.