Vibration signals, Battery backup mode, Last alert signal recall button – Silent Call VC4003-SS User Manual
Page 5: Fire smoke detector supervision

Vibration Signals
The Vibra-Call 3 receiver has specially defined vibrations for each type alert signal
received. (See the Reference Chart on Page 6).
Battery Backup Mode
In the event of a power failure, the Vibra-Call 3 Docking Port will automatically
enter into battery backup mode.
Note: Programmed transmitter codes are retained in memory even when the power is removed.
Last Alert Signal Recall Button
To recall the last received alert signal, press each of the six buttons on the top side
of the Vibra-Call 3 receiver, one at a time. The receiver will vibrate only when you
press the button that identifies which transmitter sent the signal.
Fire Smoke Detector Supervision
The Vibra-Call 3 receiver constantly communicates with up to 4 smoke detectors
or fire transmitters, or combination with a “supervision” signal. The supervision
signal is an added safety feature exclusive to Silent Call 418Mhz products. This
signal supervises the receiver and transmitters to ensure proper communication and
operation between the units. If, after 20 minutes, the receiver does not receive
the supervision signal, it will assume there is a smoke or fire detector failure or
communication fault, and the unit will send a notification as follows: 1 short
vibration if detector 1 is at fault; 2 short vibrations if detector 2 is at fault; 3 short
vibrations if detector 3 is at fault; 4 short vibrations if detector 4 is at fault.
NOTE: In most cases, a supervision alert indicates the need to change out the
batteries in the smoke or fire detection transmitter.
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