User's Manual

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How the Smoke Detector Works

Normally, light pulses in the

Smoke Chamber do not reach

the light sensor.

Smoke in the Smoke Chamber

deflects light into the light sensor,

triggering an alarm.

As shown in the illustration, a light source is directed across the

smoke chamber and is not normally reflected into the sensing

element. When smoke enters the chamber, the light beam is

scattered by the smoke and is reflected into the sensor. When

enough light is detected by the sensor, an alarm is activated. On

alarm, the sounder is activated and the red LED will flash. When

the smoke clears from the smoke chamber, the unit will

automatically reset itself.

Alarm Indications

Condition Sounder Indicator RF

Light Transmission

No smoke Silent Flash every Supervision transmission

40-50 s every 12 min. for

Europe / every 64 min.

for North America

Smoke Alarm Flash every Alarm

0.67 s transmission

Automatic self test Silent Flash every Supervision transmission

functioning normally 40-50 s every 12 min. for

Europe / every 64 min.

for North America

Automatic self test Chirp between Flash every Fire Trouble

insufficient sensitivity LED flashes 40-50 s transmission

Push-button test Alarm Flash every Supervision transmission

functioning normally 0.67 s every 12 min. for

Europe / every 64 min.

for North America

Push-button test Silent Flash every Fire Trouble

insufficient sensitivity 40-50 s transmission

Magnet/reed switch Alarm Flash every Alarm

test functioning normally 0.67 s transmission

Magnet/reed switch Silent Flash every Fire Trouble

test insufficient 40-50 s transmission

sensitivity

Low battery Chirp simultaneous Flash every Fire Trouble

with LED flash 40-50 s transmission

Limitations of Smoke Detectors

While the Meridian smoke detector has been designed for reliability,

it is important to know that all smoke detectors have limitations.

• Smoke detectors will not work without power. If the batteries are

low, the smoke detector will not function. See ‘Battery Installation’

below for important information on battery use.

• Smoke detectors can only generate an alarm when smoke gets

inside the smoke chamber; anything that prevents smoke from

entering the smoke chamber may prevent or delay an alarm.

Refer to the ‘Guidelines for Locating Smoke Detectors’ on this

Instruction Sheet; it is important that smoke detectors be located

on at least every floor of the premises, preferably in every room.

It is also important to avoid obstructions, such as closed doors,

that may prevent smoke from reaching the unit. A smoke detector

will not detect a fire in the walls, in the chimney or on the roof of

a building until smoke enters the smoke chamber.

READ THIS INSTRUCTION SHEET THOROUGHLY BEFORE

INSTALLING AND USING YOUR MERIDIAN SMOKE DETECTOR

Features

• Advanced 90° photoelectric detection pattern and specially

designed smoke chamber

∗∗

for superior detection and dust

resistance

• Unique high signal-to-noise ratio and superior RFI

immunity to prevent false alarms

• Excellent smoke access provides reliable detection for all

smoke flow directions and velocities

• Loud 85dB piezoelectric alarm horn

• Battery-powered design for easy installation and

independence from house power sources

• Uses six AA batteries and special circuit design to provide

extra long battery life

• Solid-state LED indicator light (red)

• Visible flash light and audible trouble chirp for low battery

warning

• Equipped with an RF transmitter, WLS906 can

communicate with compatible DSC Wireless Security

Systems

• Test Button allows user to perform sensitivity test and get

a local indication of test result

• Magnet-activated/reed switch allows user to perform

system test

• Battery removal sensor alerts user to missing battery and

prevents installation of detector when no battery is

installed

• Automatic self-test once every 40 seconds provides an

audible trouble indication if the unit has insufficient smoke

sensitivity

• Attractive styling for any decor

∗∗

Protected under Canadian Patent No. 1452296. Other patents pending.

Introduction

The DSC Meridian photoelectric smoke detector incorporates

many advanced design features to provide years of reliable

operation. It is important to follow the installation and operation

instructions on this sheet to ensure that the unit will function

properly — even the best designed smoke detector will be rendered

useless if it is not connected or located properly.

It is very important that you understand how to test and maintain

your system. Read the Instruction or User Manual for your alarm

system to familiarize yourself with the fire alarm functions. Be sure

to test your system regularly following the test procedures described

in your manual. If you should ever have problems operating or

testing your system, and especially if there are problems with the

fire alarm functions, contact your smoke detector installer or dealer

immediately for service.

While smoke detectors and alarm systems are designed to warn you of

potentially dangerous situations, no system can prevent emergencies.

An alarm system is not a substitute for life and property insurance; you

should always maintain appropriate insurance coverage.

WLS906-433

Battery-Powered Smoke Detectors

For Residential Use

INSTRUCTIONS FOR

INSTALLATION AND USE

Summary of content (4 pages)

PAGE 1
TM WLS906-433 How the Smoke Detector Works Battery-Powered Smoke Detectors For Residential Use INSTRUCTIONS FOR INSTALLATION AND USE READ THIS INSTRUCTION SHEET THOROUGHLY BEFORE INSTALLING AND USING YOUR MERIDIAN SMOKE DETECTOR Features • Advanced 90° photoelectric detection pattern and specially designed smoke chamber∗ for superior detection and dust resistance • Unique high signal-to-noise ratio and superior RFI immunity to prevent false alarms • Excellent smoke access provides reliable detection fo
PAGE 2
• Smoke detectors have certain obvious limitations: they may not provide protection for someone smoking in bed, for children playing with matches, or for sudden and violent explosions. A smoke detector is a single part of overall fire safety precautions; the smoke detector should never be seen as a substitute for a complete fire safety program. Testing Your Smoke Detector Follow the test procedure described here or contact your smoke detector dealer or installer for testing instructions.
PAGE 3
Fire Safety In The Home Most fires occur in the home, and to minimize this danger, it is recommended that a household fire safety audit be conducted and a family escape plan be developed. Household Fire Safety Audit 1 Are all electrical appliances and outlets in a safe condition? Check for frayed cords, overloaded lighting circuits, etc. If you are uncertain about the condition of your electrical appliances or household service, have a professional evaluation.
PAGE 4
Mounting the Unit Locate the smoke detector mounting plate on the wall or ceiling and mark all desired screw locations. Use the supplied wall anchors for all screw locations. When the anchors have been placed, secure the mounting plate to the ceiling or wall. To place the smoke detector on its mounting plate, align the mounting plate's locking tab with the lock recess on the case and turn the unit clockwise until it is firmly secured.