If you want to activate an alarm system, open a garage door or actuate the door opener with one device. Up until now, to do this, you needed 3 code locks. The DK-9880 combines all three in one. It is also perfect for use as a doorbell & access control. Due to its high temperature resistance, the keypad is suitable for exterior mounting. To protect against tampering, the controller unit is attached separately from the keypad. The code lock is easily programmed through the keypad. 1 master & 3 user codes are available. To make code-breaking almost impossible, individual codes of up to 8 digits can be programmed. The potential free relay can be programmed as a switch or button.