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The unique two wire field device operation makes installation fast and
simple, in normal operation the field device wiring operates to monitor
the input devices such Ceiling Pull Cords, when a input device is pressed
the field wiring then becomes the drive to power the over door indicators
and sounders The Wiring is monitored in case continuity is lost. The
Control unit has three LED's and a built in buzzer which are used to indicate
the health, fault and call status of the system. A battery back-up
unit is available to connect to the VPA unit to power the system in the
event of a power failure to the ECU. The system is easily be expand with
further "Sounders", "Over Door Indicators", "Reset Points" or "Ceiling
Pull Call Points" |