25 Pieces Z-Axis Auto-Zero Touch Plate Cnc Router Machine Tools Auto-Check Instrument

Specification:
Material: wire+metal
Color: as pic shows
Size: approx. 1.38*0.79inch/3.5*2cm (D*H)
Effective surface of the knife: 25mm (0.98inch)diameter
Line length: approx. 49.21inch/125cm (Including alligator clips)

Two ways to connect this item:
if your interface board has the limit switch port or other probe port, you can connect it to that port
if your interface board does not have that port, your driver board has that port, you can connect it to the driver board's limit switch port
then in the Mach 3, you need to setup the probe(Mach3 --- Config---Ports and Pins---Input signals Probe enabled , the pin number type the one you use) and the Auto-Tool-Zero. in the attachment, it is the code, you can edit it as your requirements

Usage:
The wire connect on the control panel interface.
The clip and the control board GND (negative) is connected.
The tool can be clamped portion of the operation when the knife with a clip.
When the tool contacts the knife  that the process is complete.

Package included:
25x CNC router engraving machine Tool