Linear DXS-72 User Manual

DXS-72

TWIST MOUNTING
PLATE TO
UNLOCK

REMOVE
MOUNTING
PLATE

WIRELESS
PHOTOELECTRIC
SMOKE
ALARM

Installation
Instructions

USA & Canada [phone] & [phone]

[phone]

Toll Free FAX [phone]

www.linearcorp.com

DXS-72 FEATURES INSTALL BATTERIES CHOOSE ALARM LOCATION

DXS

FORMAT

By

PRODUCT DESCRIPTION

The DXS-72 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 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 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”.

REMOVE MOUNTING PLATE

TRANSMITTER
BOARD

BATTERY
HOLDING
CUPS

INSTALL MOUNTING PL ATE PROGRAM RECEIVER MOUNT ALARM ON PL ATE

TRANSMIT LED

TRANSMITTER
TEST BUTTON

SCREW
ANCHORS
FOR WALLBOARD

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

CONNECT AND
INSTALL TWO
9-VOLT BATTERIES

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

9-VOLT BATTERY TYPES:

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

PRESS TRANSMITTER
TEST BUTTON
TO SEND SIGNAL

MATCH UP
ALIGNMENT
TABS

OR

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.
Fires start even with the best of housekeeping and fi re prevention
procedures. Fire is an unexpected event. Early warning detection
alerts occupants in time to act.
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.
Even after proper precautions have been taken, fi res can star t.

Be prepared.

The DXS-72 should be installed in accordance with National
Fire Protection Association (NFPA) Standard 72, which reads
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 (fi nished or
unfi nished), or garages is not normally recommended, as these
locations occasionally experience conditions that can result in
improper operation.
Smoke alarms are not to be used with detector guards unless
the combination has been evaluated and found suitable for the
purpose.

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 re-entering
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 departments 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 department where to look
fi rst for members of your household.

✔ Additional information on Household Fire Warning

is available at nominal cost from: The National Fire
Protection Association, Batterymarch Park, Quincy, MA

02269. Request Standard No. NFPA 72.

EX AMPLE AL ARM LOCATIONS LINEAR LIMITED WARRANTY

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 LLC 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 LLC Warranty is in lieu of all other warranties express or

implied.

All products returned for warranty service require a Return Product Authorization
Number (RPA#). Contact Linear Technical Services at 1-800-421-1587 for an RPA#
and other important details

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.

✶ For U.S. installations only: The radios are required to comply with FCC Rules

and Regulations as Part 15 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 FCC 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 © 2006 Linear LLC 212836 G

IMPORTANT!!!

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
locatedoneachstory.