FOR WHOLE-HOUSE INTERCOM SETUP WITH UP TO 16 STATIONSFOR INTERCOM OR MUSICCONNECTS TO STATIONS WITH CAT-5 WIREGRID MOUNTS IN STRUCTURED WIRING ENCLOSURESKIT INCLUDES:ONE MSSDMC10H SYSTEM HUBFOUR MSSDMC10RS ROOM STATIONSONE MSSDMC10DS DOOR STATIONONE 12V SWITCHING POWER SUPPLYUPC : 727066101099Shipping Dimensions : 12.10in X 9.40in X 7.50inEstimated Shipping Weight : 6.35