It is a stand-alone compact anti-lock metal keypad by Paxton which can be used in heavy-duty construction into front doors and bar entrances outdoors. All sensitive parts of the construction are protected by a stainless steel frame with IPX7 protection. It is completely autonomous and does not require its connection to a separate control unit. The device enables us to control-open the door or bars without having to use the external relay.The illuminated numeric keys make it easy to use the keyboard even in complete darkness and blink brightly in green to indicate that the correct code has been entered to allow or access the protected area.