The code keyboard for surface mounting, which is completely made of aluminium (3 mm thick), is suitable for both indoor and outdoor applications. Up to ten different user codes can be taught to the code keyboard. Different functions can be assigned to every user code, such as a door opener function or an external relay contact. The code keyboard can be integrated in the Niko access control installation, but it can also be used as a stand-alone appliance. In combination with power supply 20 (10-801), the code keyboard can directly control a door lock. The code keyboard is illuminated by means of five blue LEDs.