Relay module extending video intercom service with an additional entrance or gate. The improved version of the BCS-MODKD module: screw terminals, metal housing, smaller dimensions and LED signaling. Built-in potential-free relay output to control any NO or NC device. The output is activated by a video intercom monitor or a mobile phone from the BCS Viewer Lite application. It works with the BCS-PAN1202S outdoor panel and the BCS-PAN-KAM camera module. The module should be connected to the RS485 output of the external panel. Requires a 12VDC power supply. The device also supports the function of an exit button, when pressed, the relay output will be triggered. This function can be used to connect other devices or systems, such as: SSWiN, access control, radio line or other devices with a relay output.