Use this installation sheet along with the associated alarm system installation manual for
installation instructions and programming details. All instructions specified within that
manual must be observed. The WT4911/8911 is a two-way wireless outdoor siren. Siren
sounds and the strobe light are activated when an alarm condition is received via DSC wire-
less protocol from a compatible, two-way enabled security panel (e.g., PC9155). The
WT4911/8911 must be enrolled on the security panel before it can receive commands
from the panel for sounding alarms, strobe activation and communicating a required
response, such as the WT4911/8911 status or the local outdoor temperature. The outdoor
siren is capable of sounding different alarm cadences (e.g., carbon monoxide, continuous
burglary, pulsating fire, or temporal three fire), and bell squawks to suit the type of com-
mand it receives. Up to four WT4911/8911 can be enrolled on the same security panel and
supervised as separate units. To ensure two-way contact between the siren and the security
panel, the WT4911/8911 regularly sends supervisory signals to the security panel. With
each supervisory signal sent to the panel, the siren provides the outdoor temperature. In
addition, the WT4911/8911 monitors for the case and wall tamper switch states, and the
battery state. In the event of a low battery or a tamper activation, the WT4911/8911 will
transmit the appropriate signal to the security panel, and (if configured) provide an audible
and visual indication that a local event has occurred.
NOTE: For UL/ULC listed applica-
tions the siren sounds a continuous tone.
Specifications
NOTE: Battery life has not been evaluated by UL and ULC.
Powering up the WT4911
The WT4911 contains a battery that includes a feature called ‘passivation’. This feature
preserves the shelf life of the battery when it is not being used. Every WT4911 will need to
be ‘depassivated’ before using the outdoor siren for the first time.
NOTE: Make sure to follow the steps below for a brand new battery on the unit or
if a battery is being replaced. The WT4911 could lose power prematurely if a
brand new battery is not used.
1. Hold the tamper switch closed before plugging the battery in.
2. Plug in the battery AND continue to hold the tamper for 10 seconds before releasing it.
3. Once the tamper is released, after the initial 10 seconds, the siren flashes the strobe in
several different patterns to indicate it is in depassivation mode.
NOTE: It can take a unit up to 30 minutes to fully depassivate.
4. When depassivation is complete, the strobe lights shut off completely and the siren
starts to beep 3 times every 5 seconds.
5. Create a tamper. The WT4911 will go into a normal power up sequence with 6 short
beeps and flashes of the strobe lights.
6. The WT4911 is ready to be enrolled on the system.
NOTE: If the battery is unplugged during depassivation and plugged back in
within 1 minute, the depassivation sequence will continue.
Restart Depassivation Sequence
When depassivation reaches 30 minutes the siren stops trying to depassivate the battery
and beeps once every 5 seconds. To end this siren condition and begin the depassivation
sequence again, hold the tamper and/or replace the battery. If batteries are extremely pas-
sivated (i.e., battery could be defective or dead) they should be replaced.
Two-Way Wireless Outdoor Siren Enrollment
Setting up the WT4911/8911 consists of enrolling and powering up the device. Enrolling
the WT4911/8911 permits the siren to communicate with the security panel. The installer
can activate the outdoor siren by Quick Enrollment or Serial Number Programming.
Quick Enrollment
1. Enter the enrollment mode through installer programming, see section [898].
2. Power up the outdoor siren by activating the pre-installed battery (plug the battery
cable into the battery connector located inside the backplate to activate the battery.) If
it is already powered up, press and release the tamper switch.
3. The outdoor siren sends a request to the security panel to enroll on the system.
4. The keypad displays the electronic serial number which must be confirmed by keying in
[*]. If the electronic serial number is incorrect, Press [#] and repeat this step.
NOTE: The electronic serial number is a 8-digit alphanumeric number located on
a sticker on the wireless device.
5. Select the module number that the device should be enrolled as.
NOTE: To enroll an existing siren onto a new panel, that siren must first be pow-
ered down then powered back up again.
6. To enroll each additional outdoor siren, repeat starting from Step 2.
Serial Number Programming
1. Enter the enrollment mode through installer programming, see section [804].
2. Select the module number the device will be enrolled as. Sections [301]-[304] for sirens.
3. Enter the serial number using the keypad. To delete a previously enrolled siren, enter all
zeros (0’s).
Placement Test
Perform a placement test to ensure there is sufficient signal strength at the desired
mounting location for proper communication between the security panel and the siren.
1. Place the security panel into placement test, see section [906].
2. Start the placement test by tampering the outdoor siren being tested.
3. The siren will respond with 1 strobe flash and 1 beep if the location is “Good”. If the
siren is at a “Bad” location then it will respond with 3 strobe flashes and 3 beeps.
WARNING: Wear hearing protection when installing the outdoor siren.
Physical Installation
The outdoor siren is mounted onto a flat surface, such as the outside of a building. A wide
variety of mounting surfaces are acceptable but the mounting material must be able to
support the weight of the siren.
NOTE: The wall tamper switch must remain closed
when the outdoor siren is mounted.
1. Open the WT4911/8911 by lifting the front
cover up from the siren bottom until it sepa-
rates from the backplate.
2. If the battery is not already activated, plug
the battery cable into the battery connector,
see figure 2.
3. Position the backplate on a flat mounting
surface and mark this location.
4. Secure the backplate to the mounting surface with all the screws provided for this
purpose (4 screws). A screw must be installed in the tamper switch portion of the
backplate.
5. Carefully hinge then snap the front cover back onto the backplate, making sure it is
correctly aligned, see figure 1.
6. Secure the front cover to the backplate with 2 front cover screws. The remaining
screws are spares.
NOTE: Ice and snow may block siren openings and affect audibility. Please inspect
and clean regularly.
Battery Replacement
NOTE: Please contact your local distributor to obtain a replacement battery.
The security panel will indicate when the battery is low and requires replacement. The bat-
tery must be replaced by a
TRAINED SERVICE PERSON ONLY
.
REPLACE ONLY WITH
THE TYPE RECOMMENDED BY THE MANUFACTURER
. To determine which siren has a
low battery, open the front cover and disconnect the battery, wait 30 seconds, reconnect the
battery. If the strobe light flashes, the battery is good. If the strobe doesn’t flash, the bat-
tery is low and should be replaced observing the polarity as indicated by the engraving.
IMPORTANT: If replacing the battery, make sure to follow the instructions in “Pow-
ering up the WT4911”.
After removing the battery, wait 30 seconds before inserting a
replacement battery
.
Under typical use, the WT4911/8911 is capable of operating on bat-
tery power alone for 3 years without having to be replaced (under normal operating condi-
tions).
Do not try to recharge the battery. Disposal of used batteries must be made in
accordance with the waste recovery and recycling regulations in your area.
WARNING: Risk of fire, explosion, or burns. Do not recharge, crush, disassemble,
heat above 100ºC, or incinerate.
Configuration and Testing
Use the keypad interface to set up the WT4911/8911 siren options supported by the
main panel (see table below).
NOTE: The wireless keypad receives the tempera-
ture from the outdoor siren enrolled in the lowest slot.
The maximum sound duration time can be programmed by the installer, see section
[804][330] in the alarm system installation guide. For EN installations, the maximum
time for which an audible warning device will sound continuously is 15 min.
NOTE: The operational period of a warning device may be subject to variation depend-
ing on local or national requirements.
IMPORTANT:
The equipment is fixed, wall mount and shall be installed and
serviced by
SERVICE PERSONS ONLY
. The equipment enclosure must be
FULLY ASSEMBLED
and
CLOSED
, with all the necessary screws.
Instruct the end-user to:
NOT
attempt to service this product; opening or
removing covers may cause exposure to dangerous voltages or other risks.
•
Not throw the battery into a fire or water. Disposing the battery in a fire will
cause rupture and explosion;
• NOT
dispose of the waste battery as
unsorted Thyonil Chloride waste. Consult your local rules and/or laws
regarding recycling of this Lithium battery; It will help protect the environ-
ment by reducing the number of batteries consumed. Risk of fire or explo-
sion if the battery is not properly connected; Avoid short circuit; Do not
expose batteries to temperatures above 100°C; Do not use water in case of
battery leakage. Refer to the MSDS of battery for more details.
NOTE: When model WT4911 is used for indoor applications, the integral sounder
on the control unit (model PC9155-433) shall be disabled and the WT4901 Indoor
Siren shall not be used in the same installation.
WT4911/WT8911 Two-Way Wireless Outdoor
Siren – Installation Instructions
Humidity (max): 93% R.H.
Operating Temperature: -40°C to 70°C (-40°F to 158°F)
Operating Frequency: 433.92 MHz, 868
MHz (WT8911 only)
Temperature Range for UL/ULC: -40°C to 66°C
IP Rating: 34
Battery Life: 3 years typical usage
Alarm Signals-Output Level: for CE ~100dB@ 1m
Alarm Signals-Output Level: >=85dB @ 3m
Battery: D size 3.6V Lithium Thionyl Chloride (ER34615M-T1, Able) (DSC ordering number,
WT4911-BATTERY)
Low battery indication: @~14% of battery capacity
Type of warning device: Self-powered
Dimensions: Width = 21.5cm, Length= 27.8cm, Depth= 4.5cm, Weight =0.935kg
EN50131-1 GRADE2 / CLASS IVA, EN50131-4, EN50131-6 Power Supply Type C
Compatible control panels: PC9155-433/868, PC9155D-433/868, PC9155G-433/868 (-868 for
WT8911 only) Only model WT4911 is UL and ULC listed for residential burglary applications
DG009055
Figure 1.
Open (Close)
Front Cover
Programming Section
Options
Siren:
Siren#1[311]
Siren#2[312]
Siren#3[313]
Siren#4[314]
1. Alarm sounds Enabled
2. to 4. Not Available
5. Bell Squawks Enabled
6. Strobe Enabled
7. Strobe follows BTO
8. Siren Tamper Enabled
1. Alarm sounds Disabled
2. to 4. Not Available
5. Bell Squawks Disabled
6. Strobe Disabled
7. Strobe follows Alarm Condi-
tion in the armed state
8. Siren Tamper Disabled
Global Siren:
Sirens#1-4 [320]
1. Tamper Activates Siren/
Strobe While Disarmed
2. Pre-Alarm Signal Enabled
3. to 8. For Future Use
1. Tamper does not Activate
Siren/Strobe While Disarmed
2. Pre-Alarm Signal Disabled
3. to 8. For Future Use
Max. Siren Time:
Sirens#1-4 [330]
Maximum Siren Activation Time |_|_|_| Valid entries are 000-
255 minutes, Default 010. This timer overrides continuous fire bells.
NOTE: For UL/ULC residential burglary installations set maximum activation time to 5 minutes.
