Switching unit for AX security intercom system. It allows the connection of up to 4 central stations and up to 8 secondary stations through RJ-45 connectors. It has programmable contacts for remote control functions, such as door opening, configurable as NO or NC. RS-232 connection for programming, event history and system maintenance from PC (software included). It is supplied with the necessary material for mounting in a 19 '' rack. Black color. Dimensions 480 x 88 x 335 mm.