DoorBird Multi IP I/O Door Controller A1081The A1081 DoorBird I O Door Controller offers tamperproof control of up to three doors or gates over a network. It can be installed in a protected interior area, such as a control cabinet in the basement and can be connected to the DoorBird IP video door station via the network. No physical wires have to be connected between the door or gate and the door station. The DoorBird I O Door Controller therefore eliminates the risk of shorting and activating