User's Manual
20070303
z If the LED doesn’t light and no beep is sounded, it means the Smoke Detector is out-of-order.
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z After installation, the Smoke Detector will automatically transmit Supervisory Signals periodically to the
Control Panel at intervals of 30 min. to 50 min. randomly.
z If the Control Panel has not received the signal from the Smoke Detector for a preset period of time, the
Control Panel will indicate it on its display to show that particular Smoke Detector is experiencing an
out-of-signal problem.
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z Once the concentration of the smoke exceeds the set threshold value, the Smoke Detector lights up its LED
to indicate it’s sending the Smoke Alarm signal to the Control Panel. After the transmission is completed,
SD-7 then activates its buzzer with LED flashing rapidly for 10 seconds for local warning.
z After this 10-second local warning period, SD-7 proceeds to perform a follow-up smoke check. If the smoke
concentration is found to be alarming still, SD-7 will repeat another 10 seconds of local warning with buzzer
and rapid flashing LED.
z SD-7 will repeatedly perform follow-up checks until the smoke concentration is lower than the set value, then
the alarm will be stopped automatically, or the alarm can be stopped manually by using the “Alarm Silence”
function.
z Once a Smoke Alarm Signal has been transmitted, SD-7 will continue to send alarm signals at every 2
minutes when the smoke concentration continues to be higher than allowed. This 2-minute cycle will be
repeated until the smoke concentration is lower than the set value, then the alarm will be stopped
automatically, or the alarm can be stopped manually by using the “Alarm Silence” function.
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z 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.
z During this 10-min. Alarm Silence period, the LED will flash once per second.
z 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.
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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,
z Press 10 seconds on the TEST button and hold until the LED start to flash. The SD-7 will sounded 2 short
beeps then follow the process describing in “Step 3 of Installation procedures” to take the new reference
value.
z Every time re-insert the batteries, the SD-7 will also take the new reference value following the “Step 1 to
Step 3 of Installation procedures”.
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z It is recommended that the installation site be in the center area of the ceiling.
z Do not locate the detector in the following locations:
¾ The Kitchen – Smoke from cooking might cause an unwanted alarm.
¾ Near a ventilating fan, florescent lamp or air-conditioning equipment –
air drafts from them may affect the sensitivity of the detector.
¾ Near ceiling beams or over a cabinet – stagnant air in this areas may
affect the sensitivity of the detector.
¾ In the peak of an “A” frame type of ceiling.
This device complies with Part 15 of the FCC Rules and RSS-210 of Canada. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
FCC Caution :
To assure continued compliance, any changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate this equipment. (Example - use only shielded interface cables when connecting to computer or
peripheral devices)