The AK-11 Exterior Digital Keypad is a must-have for commercial settings. Airports, warehouses, office buildings, hospitals, commercial parking lots, etc. need a tried-and-trued security device to help keep out unwanted personnel while—at the same time—permitting easy entry to those with authorization. The AK-11 uses a unique programming-per-entry code, each code activating either one or both relays. (480 unique codes are possible with this device.) Planning to install one of these keypads outdoors, in an area without much nearby illumination? No problem! This device also features a programmable courtesy light feature, which can illuminate the keypad for 1-4 minutes at a time. Its exterior consists of a rugged, aluminum cast chassis for durability. This keypad can be mounted to walls and pedestals both indoors and outdoors.