Coordinate matrix switch for intercoms ELTIS DP400, DP5000 series. Provides connection of up to 100 audio lines of subscriber devices in accordance with the specified apartment number. Does not require a power supply. Commutation – screw pads. Small-sized flat body for easy placement in low-current riser niches or boxes. Holes are provided for wall mounting and a DIN rail clip. Cable fixing bar inside the case to prevent “pulling out”. The design of the housing cover allows for sealing to detect tampering.