The switcher module is required in facilities with two video accesses, i.e. installations with 2 video entry outdoor panels or video entry panel plus auxiliary camera. It is not necessary in installations where one of the accesses is audio only. Its mission is to select the video signal from the panel where the call is from.This is done by means of a signal (a negative) sent by the panel through the "S" wire connecting the panel with the switcher.
DIN-10 rail format for easy installation inside an electrical equipment box, or can can be screwed directly onto the wall.