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Install the 2Security Relay onto a two-wire cable between the intercom and the electric lock inside the area in order to be secured (typically behind the door). The device is powered and controlled via this two-wire cable and so it can be added to an existing installation. Thanks to its compact dimensions the device can be installed into a standard mounting box.

Make sure that the 2Security Relay is always connected to the intercom's 12V output. The motherboard relay is used for switching lights or other peripherals that do not have to be secured. 

Settings for the 2N® IP Vario: