Trigon Castlegate Wireless Telephone Entry System

The Castlegate Wireless telephone entry system by Corona, Calif.-based Trigon Electronics Inc. is a hands-free system that uses the latest VoIP technology and non-line-of-sight 900MHz broadband RF technology for communication and access control.

The entry system has a range in excess of 4,000 feet and works with telephones through the patent-pending Remote Demarcation Interface Module (RDIM). Visitors initiate calls from the entrance by pressing the “call” button on the illuminated faceplate. The call is received by a remote transceiver unit and is coupled into the telephone network via the Trigon RDIM.

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