User Manual

General Description:
The Model SD4-SS photocell electronic smoke detector with built-in
wireless transmitter is intended for use with the Silent Call® Mini
receiver to form an alerting system. The transmitter will send alarm
condition messages to the system’s receiver.
The SD4-SS wireless transmitter operation is to be used only with Silent
Call® Signature Series Receivers. The transmitted signal incorporates a
digital addressable coding system that is preset at the manufacturer. The
SD4-SS wireless smoke detector transmits a supervisory pulse
ensuring system integrity with paired Signature Series Receiver. Silent
Call Signature series receivers can supervise up to three different smoke/
fi re address codes. Reference receiver operation manual for more
information on fi re supervision feature.
IMPORTANT: The range and proper operation of any wireless device will
vary depending on its surroundings. It is very important that each
SD4-SS detector is tested with each receiver intended for Alarm.
The Model SD4-SS incorporates a state of the art optical sensing
chamber and an advanced microprocessor. The microprocessor allows
the detector to automatically maintain proper operation at factory
calibrated detection levels, even when sensitivity is altered due to the
presence of contaminants settling into the unit’s smoke chamber. In
order for this feature to work properly, the chamber must never be
opened while power is applied to the smoke detector.