2007/6/22 - A
Alarm Silence
Once the alarm is sounding, pressing the Test button will put the Smoke Detector into Alarm Silence
mode for 10 min. and the alarm will be stopped.
During this 10-min. Alarm Silence period, the LED will flash once per second.
After this 10-min. period is over, the Smoke Detector will sound a 2-tone beep and then returns to
normal operation mode. If the Smoke concentration is still over the set threshold value, the Smoke
Detector will sound the warning alarm again.
Taking New Reference Value
As the operation condition of the smoke detector may vary after being installed for some time, you may wish to
take a new reference value to ensure the best use of the smoke detector. To do this:
Press 10 seconds on the TEST button and hold until the LED start to flash. The SDA-9 will sound 2 short
beeps then follow the process described in calibration process to take the new reference value
Every time re-insert the batteries, the SDA-9 will also take the new reference value following the
warming and calibration process.
Installation Note
It is recommended that the installation site be in the center area of the ceiling and only to be
used indoors. The operational temperature range for the device is 10 – 40°C.
Do not locate the detector in the following locations:
The Kitchen – Smoke from cooking might cause an unwanted alarm.
Near a ventilating fan, florescent lamp or air-conditioning equipment – air drafts
from them may affect the sensitivity of the detector.
Near ceiling beams or over a cabinet – stagnant air in these areas may affect
the sensitivity of the detector.
In the peak of an “A” frame type of ceiling.
