Aim Motorcycle Hall Speed Pick up 712 1m

£60

The Aim Magnetic Speed Pick up (712 Plug /1m cable) is a Hall effect sensor that varies its...

The Aim Magnetic Speed Pick up (712 Plug /1m cable) is a Hall effect sensor that varies its output when it meets a magnetic field.             

M8 Thread

The sensor consists a thin piece of metal what passes a continuous current through it. When the sensor is placed in a magnetic field the electrons move to one side of the metal and protons move to the other side of the plate.

Then you will be able to get a voltage. The sensor only produces around seven volts. When the electrons move to one side a potential difference is produced between the two sides of the metal.