CD30 is a battery-powered codelock that fits directly on an interior door. The programming of codes is carried out directly via the keypad. It is possible to manually change the settings to leave the door unlocked if necessary. The batteries required are standard alkaline or lithium cells and are optionally available. The CD30 is suitable for lock cases with a distance between 105mm and 116mm measured between the center of the door handle and the center of the lock cylinder