The model 1802 EPD is an ideal telephone entry system that is suited for applications that have limited space and can be used in residential as well as commercial applications. The built-in Electronic Directory eliminates the need for external or add-on directories. Visitors are easily identified by voice communication and can be granted by voice communication and can be granted or denied access directly from a touch-tone telephone. Standard features are full-duplex communication, 100 phone number memory non-expandable, programmable directory codes (1-4 digits), 10 and 11 digit dialing capability, two special inputs can be programmed for relay activation or dial-out function, 5-digit entry codes (6) for special needs, built-in clock provides automatic relay activation, time zone restrictions on selected entry codes, time clock has its own backup power source, flash entry codes, 2 relays for door/gate control, single-line electronic directory uses super-twist LCD with 5/16 inch characters, built-in postal lock provision, EEPROM memory, and power transformer included. Warranty: 2 years.