background image

Mounting the Detector

Once you have found a location that is within range
of the receiver, you can mount the WLS912. 
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.

© 1999 Digital Security Controls Ltd.

1645 Flint Road, Downsview, Ontario, Canada M3J 2J6

Tel. (416) 665-8460 • Fax (416) 665-7498 • Technical support line 1-800-387-3630

www.dscgrp.com

Printed in Canada 29003922 R002

WLS912
Glassbreak Detector

INSTALLATION INSTRUCTIONS

The WLS912 is a battery-operated glassbreak sensor, designed to detect the sound
produced by the shattering of framed glass. Equipped with an RF transmitter, the
WLS912 establishes a supervised, one–way communications link with the system
controller.
The WLS912 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 ................. 4.5V (three "AA" Alkaline 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

Before installing batteries, please note the following guidelines:

The detector is designed to work with 

Eveready Alkaline Energizer

 "AA" 

batteries. Do not install any other type. "No-name" or generic brand 
batteries may not provide the best quality and dependability.

Always replace all three batteries at the same time.

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.

To install batteries:

1.

Remove the de

t

ector 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

Reviews: