Digital Security Controls Ltd. 02WLS916NB User Manual
WLS916-433 Series
Wireless Smoke Detector
Installation and Operating Instructions
Read this instruction sheet thoroughly
before installation and use of the
WLS916-433 Wireless Smoke Detector
Introduction
The WLS916-433 is a wireless photoelectric smoke detector with a
fixed temperature heat detector and an internal piezoelectric
alarm. Three version are available: US version (UL), Canadian ver-
sion (ULC) and an International version (EU).
fixed temperature heat detector and an internal piezoelectric
alarm. Three version are available: US version (UL), Canadian ver-
sion (ULC) and an International version (EU).
Operation
Approximately every 7 to 8 seconds the unit tests for a smoke or
heat alarm condition. During this sequence the unit also performs
self diagnostics, and checks for tampers and faults. During normal
operation the LED will flash every 48 seconds and the sounder will
not sound.
heat alarm condition. During this sequence the unit also performs
self diagnostics, and checks for tampers and faults. During normal
operation the LED will flash every 48 seconds and the sounder will
not sound.
Smoke Alarm
The smoke detector has a nominal fixed alarm sensitivity of
approximately 2.5%/ft. obscuration. The smoke detector will go
into alarm when the signal level exceeds the 'alarm' threshold and
automatically restore when the signal level falls below the alarm
'restore' threshold. During an alarm the LED will flash 1/second
and the sounder will sound the the evacuation temporal pattern
(UL, EU) or continuous beeps (ULC).
The smoke detector has a nominal fixed alarm sensitivity of
approximately 2.5%/ft. obscuration. The smoke detector will go
into alarm when the signal level exceeds the 'alarm' threshold and
automatically restore when the signal level falls below the alarm
'restore' threshold. During an alarm the LED will flash 1/second
and the sounder will sound the the evacuation temporal pattern
(UL, EU) or continuous beeps (ULC).
The smoke detector has a preset warning threshold at 75% of the
alarm threshold. If the signal level stays above this threshold, but
below the alarm threshold, for more than 120 seconds, the detec-
tor will go into the 'warning' state. If the signal level falls below
the early warning 'restore' threshold, the detector will restore to its
normal state automatically. If the signal level rises above the alarm
threshold, the detector will go into alarm. The LED will flash and
the sounder will chirp every 48 seconds when in the warning state.
alarm threshold. If the signal level stays above this threshold, but
below the alarm threshold, for more than 120 seconds, the detec-
tor will go into the 'warning' state. If the signal level falls below
the early warning 'restore' threshold, the detector will restore to its
normal state automatically. If the signal level rises above the alarm
threshold, the detector will go into alarm. The LED will flash and
the sounder will chirp every 48 seconds when in the warning state.
LED/Test Button
Piezo Sounder
Alignment Marks
Note: This feature is intended to provide a warning if the environ-
ment is persistently close to the alarm threshold and provide more
time to investigate and either escape or correct the situation.
ment is persistently close to the alarm threshold and provide more
time to investigate and either escape or correct the situation.
Smoke - Drift Compensation
The detector automatically compensates for long-term environ-
mentally induced changes to maintain a constant smoke sensitivity.
When the drift compensation has reached its high or low limit of
adjustment, the detector will go into the trouble state.
The detector automatically compensates for long-term environ-
mentally induced changes to maintain a constant smoke sensitivity.
When the drift compensation has reached its high or low limit of
adjustment, the detector will go into the trouble state.
Heat Alarm
The heat detector will go into alarm when the heat signal level
exceeds the heat alarm threshold (135ºF/57.22ºC); and will auto-
matically restore when the heat signal level falls below the heat
alarm threshold (restore). During an alarm the LED will flash 1/sec-
ond and the sounder will sound the the evacuation temporal pat-
tern (UL, EU) or continuous beeps (ULC).
exceeds the heat alarm threshold (135ºF/57.22ºC); and will auto-
matically restore when the heat signal level falls below the heat
alarm threshold (restore). During an alarm the LED will flash 1/sec-
ond and the sounder will sound the the evacuation temporal pat-
tern (UL, EU) or continuous beeps (ULC).
Batteries
The WLS916-433 is powered by two, 3 V
The WLS916-433 is powered by two, 3 V
DC
lithium batteries.
Do NOT use batteries other than those listed.
The low battery threshold is set so that the batteries will provide
not less than 14 days of operation and at that point the detector
will send a 'low battery' signal. If the battery is still low 7 days after
falling through the low battery threshold, the horn will 'chirp' once
every 48 seconds until battery failure. During the first 7 days after
low battery detection, (non-chirp period), if the detector is tested
or goes into alarm, the horn will 'chirp' once the test or alarm is
restored and remain 'chirping' until battery failure.
not less than 14 days of operation and at that point the detector
will send a 'low battery' signal. If the battery is still low 7 days after
falling through the low battery threshold, the horn will 'chirp' once
every 48 seconds until battery failure. During the first 7 days after
low battery detection, (non-chirp period), if the detector is tested
or goes into alarm, the horn will 'chirp' once the test or alarm is
restored and remain 'chirping' until battery failure.
Tamper
The removal of the detector from the mounting plate initiates a
'tamper' transmission. The tamper condition is restored after the
detector is mounted on the plate.
The removal of the detector from the mounting plate initiates a
'tamper' transmission. The tamper condition is restored after the
detector is mounted on the plate.
Wireless Transmissions
A supervisory message is transmitted at 64 minute intervals (12
minutes in EU models) to the control panel. If the signal is not
received the control panel determines that the detector is missing.
minutes in EU models) to the control panel. If the signal is not
received the control panel determines that the detector is missing.
The detector transmits the following:
•
•
Alarm / Alarm Restore - (heat or smoke alarm). Transmitted
at time of occurrence.
at time of occurrence.
•
Tamper / Tamper Restore - (tamper switch activated) 10
second maximum delay on restore before transmission.
second maximum delay on restore before transmission.
•
Low Battery - (battery voltage falls below threshold). The
batteries are tested & transmitted at the time of a supervisory
or other transmissions.
batteries are tested & transmitted at the time of a supervisory
or other transmissions.
•
Trouble - (detector fault or sensor compensation limit
reached). Troubles are transmitted at the time of occurrence
(one trouble per supervisory interval).
reached). Troubles are transmitted at the time of occurrence
(one trouble per supervisory interval).
DR
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