Introduction
The WS4936 / WS4936EU / WS8936 is a wireless pho-
toelectric smoke detector with a fixed temperature and rate of
rise heat detector, and an internal piezoelectric alarm. Four
versions are available: US version (UL), Canadian version
(ULC), International version (EU), and Australian version
(AUS).
NOTE:
Heat detection based on rate of rise has not been
investigated by UL/ULC.
NOTE:
AU and EU versions do not include a fixed tem-
perature heat alarm, but
DO
include a rate of rise
alarm.
HUSH/TEST BUTTON
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 green LED will flash every 12
seconds and the sounder will not sound.
Smoke Alarm
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 evacuation temporal pattern (UL,
EU, ULC).
Alarm Silencing
This smoke alarm is provided with an automatically resettable
alarm silencing feature. When the sensor is in alarm, by press-
ing the Test/Silence/Reset button it will silence the local
annunciation of the alarm and transmit an alarm restoral
event to the control panel. The LED will flash every 8 seconds
(for up to 10 minutes) to indicate the alarm has been
silenced.
2 9 0 0 9 5 2 3 R0 0 1
The flashing LED will stop when the unit returns to normal
operation. The alarm silence feature has a fixed time setting
that desensitizes the smoke alarm for 8 minutes.
Alarm silencing does not disable the smoke alarm but rather
reduces its smoke sensitivity. Following the silenced period
the smoke alarm restores automatically to its intended oper-
ation. If smoke around the unit is dense enough to suggest a
potentially dangerous situation, it will stay in alarm, or may
return to the alarm state quickly.
Detector Trouble
When the detector has a general fault, the yellow LED blinks
once every four seconds and there is a chirp every 48
seconds. After 12 hours, the panel will display a loss of super-
vision message.
Status
LEDs
Sounder
(do not pulse the sounder
and LED concurrently)
Normal
Green flash every 12
seconds
Off
Heat
Alarm
Red flash every 1
second
ANSI S3.41 temporal 3
Heat
Test
Red flash every 1
second
ANSI S3.41 temporal 3
Smoke
Alarm
Red flash every 1
second
ANSI S3.41 temporal 3
(press button to hush for 5-
10 minutes)
Smoke
Test
Red flash every 1
second
ANSI S3.41 temporal 3
(press button to hush for 5-
10 minutes)
Test
Alarm
Red flash every 1
second
ANSI S3.41 temporal 3
Freeze
Warning
3 yellow flashes every
4 seconds
Off
Detector
Trouble
Yellow flash every 4
seconds
One chirp every 48
seconds
Low
Battery
Yellow flash every 12
seconds
One chirp every 48
seconds (press button to
hush for 12 hours)
Detector
Dirty
Yellow flash every 8
seconds
One chirp every 48
seconds
Power-
up
Red, yellow, green,
flash sequence
One chirp at the end of the
power-up sequence
Tamper
Red, yellow, green
flash sequence every
12 seconds
Off
Table 1: Detector and Status Indication
1
WS4936/WS4936EU (433MHz)/WS8936 (868MHz) Series
Wireless Smoke Detector
Installation and Operating Instructions
Read this instruction sheet thoroughly before installation and use of the WS4936 / WS4936EU/ WS8916
