The WPR10CL is a 3 digit combination lock specifically developed for the CAYMON WPR and HPR series. By installing the WPR10CL you can create a secure lockable 19" cabinet perfect for storage of precious 19" equipment. How to reset the 3 digit code? When the lock is in the open position, insert a pin with 2 mm diameter into the reset notch provided on the side of the lock. Reset the password by turning the number dials, like this a new code is set.