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DSW108B

Smoke Alarm User’s Manual

DSW108B

  are photoelectric smoke alarms, they are generally 

more effective at detecting smoldering fires which smolder for 
hours before bursting into flame. Sources of these fires may 
include cigarettes burning in couches of bedding. DSW108B 
accords with the ISO/DIS 12239 Standard.

IMPORTANT! PLEASE READ CAREFULLY AND KEEP IT.

 

This user’s manual contains important information about your 
smoke alarm’s operation. To insure your safety, you need install 
one alarm at least in your every single room. Please don’t open 
the smoke alarm for that may cause improper effect. 

Related Power: 

DC9V     

                           AC110V  
                           AC220V  

Static Current:

 <10uA

Alarm Current:

<10mA

Alarm Sonority: 

85dB(3m)

Low Voltage Alarm: 

6.5V

0.5V

o

o

Working Temperature: 

-10 C~50 C

1. At first, you need install them in your bedroom and routeway, 
and should install one item in every bedroom at least.
2. Stairway is important for you to rush out when fires occur, so 
there must install smoke detectors.
3. You at least require one smoke alarm on every floor, including 
finished attics and basements.
4. Install one alarm beside every electric facility.
5. Install smoke alarms in the middle of ceiling, because smog, 
heat and flashes always lift to the top of rooms
6. If some reasons cause you can’t install them in the middle of 
ceiling, you need to install them at least 10cm away from the 
wall.
7. If you like to install them on the wall, they should be installed 
10-30.5cm away under the ceiling. Diagram 1.
8. You need install more than one alarm when the length of your 
hall exceeds 9m.
9. In an ablique roof room, install the alarm 0.9m away from the 
top. Diagram 2.
10. How to install smoke alarms in a removable house. The 
removable house is short of heat isolation, so you’d better install 
the alarm 10-30.5cm away from the ceiling. for  safety you need 
install another one near your bedroom, too.

TECHNICAL PARAMETER

WHERE TO INSTALL SMOKE ALARMS

CEILING

MINIMUM

10cm(4”)

M

IN

IM

U

M

1

0

c

m

(4

”)

M

A

X

M

U

M

3

0

.5

c

m

(1

2

”)

BEST HERE

NEVER HERE

ACCEPTABLE HERE

DIAGRAM 1

SIDE WALL

0.9m(3ft)

0.9m(3ft)

HORIZONTAL DISTANCE

FROM PEAK

DIAGRAM 2

ANYWGERE
IN THIS AREA

1. Where combustion particles are produced. Combustion 
particles form when something  burns.  Avoid  installing  in  the  
areas  include  poorly  ventilated kitchens, garages, and furnace 
rooms. Keep units at least 6m from the sources of combustion 
particles(stove,furnace,water heater, space heater)if possible. 
Ventilate these areas as much as possible.
2. In air streams near kitchens. Air currents can draw cooking 
smoke into the sensing chamber of a smoke alarm near the 
kitchen.
3. In very damp, humid or steamy areas, or directly near 
bathrooms whith showers. Keep units at least 3m away from 
showers saunas, dishwhashers, etc.

o

o

4. Where the temperatures are regularly below 40 F(4 C)or 

o

above 100F(38 C),including unheated buildings, outdoor rooms, 
porches, or unfinished attics or basements.
5. In very dusty, dirty, or greasy areas. Don’t install a smoke 
alarm directly over the stove or range. Clean a laundry room 
unit frequently to keep it free of dust or lint.
6. Near fresh air vents, ceiling fans, or in very drafty areas. 
Drafts can blow smoke away from the unit, preventing it from 
reaching the sensing chamber.
7. In insect infested areas. Insects can clog openings to the 
sensing chamber and cause unwanted alarms.
8. Less than 305ram away from fluorescent lights. Electrical 
“noise” can interfere with the sensor.
9. In “dead air” space, for example, in Diagram 1,near the 
corner less than 10cm.
10. If you have a smoking meeting room, don’t install the alarm 
there for the unit will alarm when several persons smoke;

Tools you will need:

* Pencil
* Drill with 6.5ram drill bit
* Standard/Flathead screwdrive
*Hammerr

WHERE NOT TO INSTALL SMOKE ALARMS

BEDROOM

BEDROOM

BEDROOM

KITCHEN

BEDROOM

LIVING ROOM

SINGLE FLOOR PLAN

SMOKE ALARM FOR MINIMUM PROTECTION

SMOKE ALARM FOR ADDITIONAL PROTECTION

MULTIPLE FLOOR PLAN

BEDROOM

BEDROOM

KITCHEN

BASEWENT

L

IV

IN

G

 R

O

O

M

HOW TO INSTALL THIS SMOKE ALARM

1. Hold base firmly and push the hinge in then turn anti-
clockwise,so release the base down.
2. Hold the smoke alarm base against the ceiling (or wall) and 
make a mark at the center  of each of the mounting slots with a 
pencil.
3. Place the unit where it won’t get covered with dust when you 
drill the mounting holes.
4. Using a 6.5mm drill bit, drill a hole through each pencil mark 
into 35mm deep.
5. Insert the plastic screw anchors into the holes and tap them 
gently with a  hammer. Tighten the 3*30 screws into the screw 
anchors, then loosen them two turns.
6. Slide the smoke alarm base up to the screw heads end up in 
the narrow ends of the mounting slots, then tighten the screws 
completely.
7. Insert the 9V battery into the the box, make sure the red pry 
is under the battery, so the  battery is stable. Diagram 3.

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