Linear DXS-72-EC User Manual

DXS-72/EC

WIRELESS
PHOTOELECTRIC
SMOKE
ALARM

Installation

Instructions

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www.linearcorp.com

DXS-72/EC FE ATURES INSTALL BATTERIES CHOOSE ALARM LOCATION

TRANSMITTER
BOARD

DXS

FORMAT

By

TRANSMIT LED

TRANSMITTER
TEST BUTTON

PRODUCT DESCRIPTION

The DXS-72/EC is a photoelectric smoke alarm with a built-in
transmitter designed for use with Linear’s DXS and DX Format
receivers. When smoke is detected, the alarm sounds a loud local
alarm. Twenty seconds after the local alarm sounds, the built-in
transmitter sends a digitally coded wireless signal to its companion
receiver. The wireless signal will be repeated every 20 seconds as
long as smoke is still present.

The digital DXS code format features over a million possible codes.
The DXS transmitters are precoded at the factory to unique codes,
so no fi eld coding is required. The DXS-72/EC can send three
different codes: alarm, test and low battery status.

For versatility, any transmitter can be programmed into any receiver

channel. Receivers must be programmed to the transmitter’s
code before system testing and operation. Refer to the receiver’s

instructions for details on programming.

The unit is powered by two 9-volt alkaline or lithium batteries. These
batteries are supplied with the transmitter and can power the unit
for up to two years. Every hour, the DXS-72/EC will send a status
transmission to the receiver. The hourly signal updates the receiver
to the transmitter’s condition. By monitoring status transmissions, the
receiver can determine if a transmitter has a low battery or has been
removed from the system. If the battery voltage drops below a preset
level the alarm will sound low battery beeps and a low battery signal
will be sent to the receiver with status reports (some receivers can
report low battery status, others cannot).

 NOTE: After replacing batteries, press transmitter test button

to reset “low battery circuit”.

PRESS TRANSMITTER TEST BUTTON
AFTER INSTALLING BATTERIES
TO RESET LOW BATTERY CIRCUIT

REMOVE MOUNTING PLATE

MATCH UP
ALIGNMENT
TABS

TWIST SMOKE
ALARM CLOCKWISE
TO LOCK TO MOUNTING
PLATE

READ THE STANDARD FOR SMOKE ALARM
LOCATION ON THE BACK OF THESE INSTRUCTIONS

DETERMINE THE PROPER LOCATION FOR THE ALARM

BED

HALL

ROOM

RECREATION ROOM

Indicates required smoke alarm
Indicates optional smoke alarm
if door is not provided between
Living and Recreation Rooms

BATTERY
HOLDING
CUPS

CONNECT AND
INSTALL TWO
9-VOLT BATTERIES

9-VOLT BATTERY TYPES:

EVEREADY 216, 522, OR 1222
DURACELL MN1604
GOLD PEAK 1604P, 1604S
ULTRALIFE LITHIUM U9VL

LIVING
ROOM

BASEMENT

INSTALL MOUNTING PLATE PROGRAM RECEIVER MOUNT ALARM ON PLATE

SCREW
ANCHORS
FOR WALLBOARD

REFER TO RECEIVER'S INSTRUCTIONS
TO PREPARE RECEIVER TO ACCEPT THE
TRANSMITTER'S CODE

PRESS TRANSMITTER
TEST BUTTON
TO SEND SIGNAL

OR

BED

ROOM

MATCH UP
ALIGNMENT
TABS

PLASTIC
SINGLE-GANG
ELECTRICAL
BOX

TWIST SMOKE
ALARM CLOCKWISE
TO LOCK TO MOUNTING
PLATE

TEST SYSTEM STANDARD FOR ALARM LOCATION

PRESS AND HOLD
ALARM TEST
BUTTON FOR ONE
MINUTE

20 SECONDS AFTER
SOUNDER STARTS
TRANSMITTER WILL
SEND SIGNAL

VERIFY THAT
RECEIVER
ACTIVATES

The purpose of an early warning smoke alarm is to detect
the presence of fi re in its early stages, and sound an
alarm giving the occupants more time to exit the premise
before the smoke reaches a dangerous concentration level.

KNOW FIRE HAZARDS. No detection device can protect life in
all situations. Therefore, safeguards should be taken to avoid such
potentially dangerous situations as: smoking in bed, leaving children
home alone, cleaning with fl ammable liquids such as gasoline.

The best fi re protection is minimizing fi re hazards through proper
storage of materials and general good housekeeping techniques. A
cluttered basement, attic, or other storage area is an open invitation
to fi re.

Careless use of combustible materials and electrical appliances, or
overloading of electrical outlets are other prime causes in starting
fi res.

It is most important that explosive and/or fast burning materials be
eliminated from the home, if at all possible.

The DXS-72/EC should be installed as follows:

2:1.1.1 Smoke alarms shall be installed outside of each separate
sleeping area in the immediate vicinity of the bedrooms and on each
additional story of the family living unit including basements and
excluding crawl spaces and unfi nished attics. In new construction, a
smoke alarm shall be installed in each sleeping room.

2-1.1.2 For family living units with one or more split levels (i.e.,
adjacent levels with less than one full story separation between
levels), a smoke alarm required by 2-1.1.1 shall suffi ce for an
adjacent lower level, including basements. (Exception: Where there
is an intervening door between one level and the adjacent lower
level, a smoke alarm shall be installed on the lower level.)

 Ceiling mounted smoke alarms should be located in the center
of the room or hall, or not less than 4 inches from any wall. When the
alarm is mounted on a wall, the top of the alarm should be 4 to 12
inches from the ceiling.

 Do not install smoke alarms where normal ambient
temperatures are above 100°F (37.8°C), or below 40°F (4°C). Also,
do not locate alarm in front of air conditioners, heating registers, or
other locations where normal air circulation will keep smoke from
entering the detector.

FIRE PREVENTION AND ESCAPE

IN CASE OF FIRE. Leave immediately. Don’t stop to pack or
search for valuables. In heavy smoke, hold your breath and stay
low - crawl if necessary. The clearest air is usually at the fl oor.

If you have to go through a closed door, carefully feel the door and
door knob to see if undue heat is present. If they seem relatively
cool, brace your foot against the bottom of the door with your
hip against the door and one hand against the top edge. Open
it slightly. If a rush of hot air is felt, slam the door quickly and
latch it. Unvented fi re tends to build up considerable pressure.
Be sure all the household realizes and understands this danger.

Use your neighbor’s phone or a street fi re alarm box. The job of
extinguishing the fi re should be left to the professionals. Too many
unforeseen things can occur when inexperienced people try to
extinguish a fi re.

A-2.5.2.1

Smoke Detection - Are More Smoke Alarms Desirable?

The required number of smoke alarms might not provide reliable
early warning protection for those areas separated by a door
from the areas protected by the required smoke alarms. For this
reason, it is recommended that the householder consider the use
of additional smoke alarms for those areas for increased protection.
The additional areas include the basement, bedrooms, dining room,
furnace room, utility room and hallways not protected by the required
smoke alarms. The installation of smoke alarms in kitchens, attics
(furnished or unfurnished), or garages is not normally recommended,
as these locations occasionally experience conditions that can result
in improper operation.

R&TTE VAEE 28365, EMC, SFT, ETS

Linear Corporation declares that the apparatus DXS-72/EC complies
with the essential requirements and other relevant provisions of
Directive 1995/5/EC.

BE PREPARED. Perform fi re drills regularly. Use them to
assure recognition of an alarm signal. For your protection,
simulate different circumstances (smoke in hall, in living
room, etc.). Then have everyone react to the situation.
Draw a fl oor plan and show two exits from each room.
Frequently a knotted rope or ladder from a window will
serve this purpose. It is important that children be instructed
carefully, because they tend to hide in times of crisis.

It is imperative that one meeting place outside the home be
established. You should insist that everyone meet there during
an alarm. This will eliminate the tragedy of someone re­entering the house for a missing member who is actually safe.

If you have children and/or invalids residing in your household, you
can help your fi re department. Most fi re depar tments have window
decals available for use in children’s or invalid’s bedrooms. Properly
used, these decals will quickly identify sleeping quarters of these
individuals and show the fi re depar tment where to look fi rst for
members of your household.

Even after proper precautions have been taken, fi res can start. Be
prepared.

EX AMPLE ALARM LOCATIONS INTERNATIONAL WARRANTY

DINING

KITCHEN BEDROOM BEDROOM

SMOKE
ALARM

LIVING
ROOM

A smoke alarm should be
located between the sleeping area
and the rest of the family living unit.

DINING KITCHEN BEDROOM

TV

ROOM

BEDROOM

SMOKE

ALARMS

In family living units with more
than one sleeping area, a smoke
alarm should be provided to
protect each.

LIVING
ROOM

BEDROOM

BEDROOM

LIVING
ROOM

BASEMENT

HALL

BED

ROOM

HALL

DINING

ROOM

BASEMENT

BED

ROOM

BED

ROOM

RECREATION ROOM

Indicates required smoke alarm
Indicates optional smoke alarm
if door is not provided between
Living and Recreation Rooms

BED

ROOM

LIVING
ROOM

A smoke alarm should be
located on each story.

This Linear product is warranted against defects in material and workmanship for twelve (12)
months. The Warranty Expiration Date is labeled on the product. This warranty extends
only to wholesale customers who buy direct from Linear or through Linear’s normal
distribution channels. Linear does not warrant this product to consumers. Consumers
should inquire from their selling dealer as to the nature of the dealer’s warranty, if any. There

are no obligations or liabilities on the part of Linear Corporation for consequential
damages arising out of or in connection with use or performance of this product or
other indirect damages with respect to loss of property, revenue, or profi t, or cost of
removal, installation, or reinstallation. All implied warranties, including implied warranties

for merchantability and implied warranties for fi tness, are valid only until Warranty Expiration
Date as labeled on the product. This Linear Corporation Warranty is lieu of all other
warranties express or implied. For warranty service on Linear equipment return product, at
sender’s expense to: Linear Hong Kong 19/F Hounor Industrial Centre, 6 Sun Yip Street Chai
Wan, Hong Kong Attention: Repairs Department

REPAIRS POLICY

Charges will be made for equipment that is not in warranty, shows customer abuse, or is
damaged by the effects of lightning, water, fi re, or other abnormal happenings. Customer’s
equipment sent in for repair may be repaired or replaced with new or remanufactured
equipment at Linear’s discretion.The customer is always responsible for shipping and handling
charges to the repairs facility. Linear will pay return shipping and handling charges on “in
warranty” products shipped back to the customer. The customer will be billed for the return
shipping and handling charges on “out of warranty” products.

There will be a 50% expedite fee for any express requests.

The International Sales Manager must be notifi ed prior to the return of product to Linear.
All international returns must have an International Repair Authorization number (IRA#). The
number must be marked on all packages. Failure to do so will cause delays in processing.

IMPORTANT!!!

Linear radio controls provide a reliable communications link and fi ll an important need in
portable wireless signaling. However, there are some limitations which must be observed.The
radios are required to comply with local rules and regulations as radio devices. As such, they
have limited transmitter power and therefore limited range.

A receiver cannot respond to more than one transmitted signal at a time and may be blocked
by radio signals that occur on or near their operating frequencies, regardless of code settings.
Changes or modifi cations to the device may void regulatory compliance.Infrequently used
radio links should be tested regularly to protect against undetected interference or fault. A
general knowledge of radio and its vagaries should be gained prior to acting as a wholesale
distributor or dealer, and these facts should be communicated to the ultimate users.

Copyright © 2003 Linear Corporation 220838 A