Magnetic Limit Switches (Hall Effect Sensor)
Designed to be used in place of mechanical limit switches for CNC Routers, 3D Printers or anywhere movement sensing is needed.

They are highly accurate and offer consistent repeatable results with extremely low tolerances. Originaly designed to be used on ShapeOko CNC routers. They provide 2 functions, Homing (most popular) and Crash Prevention. These sensors can and have been used on other CNC routers and 3D printers too. Can also be used anywhere position detection is required such as a lids, windows, and doors. In its simplest form, the sensor acts as an on/off switch when it comes in proximity of a magnet.

The sensor switches on when it comes in proximity of a magnet (indicated with a red light). It switches off when it moves away from the magnet (indicated by a green light). The sensitivity and precision of the magnetic sensor make it an excellent choice for accuracy and repeatability, especially where tolerances of .001 mm or less are required such as homing.

Connecting the sensor is very easy, there are only three connections. As noted in the picture of the sensor with the wires plugged in

• There are no moving parts to wear out and fail
• They offer a much higher accuracy than a mechanical switch
• They offer more flexibility in placement/configuration
• They are cool, lights to show current alarm status. Green = Normal, Red = Alarm
• They have three connections (Sensor, Positive and Negative). Where the mechanical limit switches just have two (Sensor, Negative).