Installation Guide

Mounting the Detector
Once you have found a location that is within range
of the receiver, you can mount the WLS912L.
1. Remove the mounting plate from the detector.
2. At the selected mounting location, place the
mounting plate on the wall (with the tab facing
down, or to the right), or on the ceiling. Mark
the screw locations. Wall anchors should be
used for all screw locations.
3. Secure the backplate to the wall.
4. Slide the detector onto its backplate.
5. Repeat the installation test using the AFT–100
tester to confirm proper operation.
FCC Compliance Statement
CAUTION: Changes or modifications not expressly approved by Digital Security Controls Ltd. could void your authority
to use this equipment.
This equipment generates and uses radio frequency energy and if not installed and used properly, in strict accordance with
the manufacturer’s instructions, may cause interference to radio and television reception. It has been type tested and found
to comply with the limits for Class B device in accordance with the specifications in Subpart “B” of Part 15 of FCC Rules,
which are designed to provide reasonable protection against such interference in any residential installation. However, there
is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to tele-
vision or radio reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Re-orient the receiving antenna
• Relocate the alarm control with respect to the receiver
• Move the alarm control away from the receiver
• Connect the alarm control into a different outlet so that alarm control and receiver are on different circuits.
If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The
user may find the following booklet prepared by the FCC helpful: “How to Identify and Resolve Radio/Television Interfer-
ence Problems”. This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402, Stock # 004-
000-00345-4.
Limited Warranty
Digital Security Controls Ltd. warrants that for a period of twelve months from the date of purchase, the product shall be
free of defects in material and workmanship under normal use and that in fulfilment of any breach of such warranty, Digital
Security Controls Ltd. shall, at its option, repair or replace the defective equipment upon return of the equipment to its repair
depot. This warranty applies only to defects in parts and workmanship and not to damage incurred in shipping or handling,
or damage due to causes beyond control of Digital Security Controls Ltd. such as lightning, excessive voltage, mechanical
shock, water damage, or damage arising out of abuse, alteration or improper application of the equipment.
The foregoing warranty shall apply only to the original buyer, and is and shall be in lieu of any and all other warranties,
whether express or implied and of all other obligations or liabilities on the part of Digital Security Controls Ltd. This war-
ranty contains the entire warranty. Digital Security Controls Ltd. neither assumes, nor authorizes any other person purporting
to act on its behalf to modify or to change this warranty, nor to assume for it any other warranty or liability concerning this
product.
In no event shall Digital Security Controls Ltd. be liable for any direct, indirect or consequential damages, loss of anticipated
profits, loss of time or any other losses incurred by the buyer in connection with the purchase, installation or operation or
failure of this product.
©2000 Digital Security Controls Ltd.
Toronto, Canada
1-800-387-3630 • www.dsc.com
Printed in Canada 29005723 R001
WLS912L
Glassbreak Detector
INSTALLATION INSTRUCTIONS
The WLS912L is a battery-operated glassbreak sensor, designed to detect the
sound produced by the shattering of framed glass. Equipped with an RF transmit-
ter, the WLS912L establishes a supervised, one–way communications link with the
system controller.
The WLS912L uses Dynamic Signal Processing* to provide accurate detection of
plate, laminated, wired and tempered glass types, while rejecting common false
alarm sounds.
*Protected under US Patent 5,675,320
Specifications
Operating Voltage ................. 3.0V (two 3V Lithium EL123AP Batteries)
Operating Temperature.......... 0
o
C - 50
o
C (32
o
F- 122
o
F)
Operating Humidity ............... 5% – 95% RH, non-condensing
Maximum detection range
Battery Guidelines and Installation
• Use fresh batteries. Most batteries have a “best before” date printed on their
packaging or on the batteries themselves. Buy batteries that have a “best
before” date of two years or more from your purchase date
• When disposing of used batteries, follow the instructions and precautions
printed on the batteries. Many cities and communities have collection sites or
services for used household batteries. Contact your municipal offices for
information on the disposal of used batteries
• Do not mix old and new batteries
NOTE: Use only Energizer Lithium EL123AP batteries.
To install batteries:
1. Remove the detector from its mounting plate:
If unmounted, hold the detector by its sides and push down
on the top end of the mounting plate, as shown at right.
If mounted, press the detector in the direction shown below.
Glass Type Thickness Minimum Glass
Size (L X W)
Level 1 Setting Level 2 Setting
Plate/
Tempered
1/8" – 1/4"
3 – 6mm
12" X 12"
30cm X 30cm
20ft
6m
10ft
3m
Wired/
Laminated
1/4"
6mm
18"X18"
46cmX46cm
20ft
6m
DO NOT USE