The CL200 is a light duty surface deadbolt. The bolt slides on the inside surface of the gate to lock or unlock. The bolt is moved manually be means of the outside knob after the code is entered, and freely by the inside knob at all times. The CL200 mechanical locks are supplied with a random code commencing with the ‘C’ clear button. To change the code after fitting, the lock must first be removed from the door. The code is non sequential, that is the code can be entered in any order e.g. 1234 can be 4321 or 1342 or whatever is the most convenient sequence. With the 13 buttons a total of 8,191 different codes are available, any of which may be entered in any order.