This BL Touch kits just works for Creality CR-10 V2/V3 Series 3D Printer.
It could work with any kinds of bed materials, such as glasses, woods, metals, and so on.
Self-test : The push pin operate two times in a test when the power is on.
Alarm : The LED light blinks if a problem was found on a self-test or during operation.
Wiring defect indicator : Blue and Red LED for indicating wiring defects.
5 Pin Cable*1 / BLTouch leveling Module*1 / Spare Plastic Probe*1 / Strip*4 / Mounting Bracket*1