The key lock switches we supplied are used as electronic switches to control the circuit ON/OFF, not mechanical locks. They are used in computer locking and other security systems.
Our key switches’ cut-out mounting diameters included 12mm, 16mm, 19mm, and 22mm. 12mm size key switches only with ON/OFF function. 16mm and 19mm keyswitches can be ON/OFF, ON/ON, OFF/ON/ON, ON/OFF/ON with latching or momentary.
All of our keylock switches are with common keys and non-waterproof.