If your CNC Machine starts to run wild, or decides to destroy itself, this button could save your machine, and your nerves! This button is capable of NC (Normally Closed - red side) and NO (Normally Open - green side) operation (notice the red and green on the bottom of the button). Push the button in to engage, and twist to release. Body Dimensions: 2 3/4" X 2" X 1 1/8"
