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Install a smoke alarm as close to the center of the ceiling as 

 

 

 

 

 

 

 

 

 

 

possible. If this is not practical, install no closer than 6 inches from the wall 
or corner. Also, if local codes allow wall mounting, install alarms on walls 
between 4 and 5 inches from ceiling/wall intersections.  

 

 

 

 

 

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 At the top of the first-to-second floor stairway. 

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 In the hall near every sleeping area. If the dwelling has multiple sleeping 

areas, install a unit in each area. If a hall is more than 30 feet long; install 
a unit at each end.  

Smoke Alarm Placement in Mobile Homes and RVs/Boats 

 

Mobile homes and RVs/Boats built after 1978 were designed and insulated 
to be energy efficient. In mobile homes and RVs/Boats built after 1978, 
smoke alarms should be installed as described in previous section - "Smoke 
Alarm Placement in Single Family Dwellings".  

Older mobile homes and RVs/Boats may have little or no insulation 
compared to today's standards. Outside walls and roofs are often made on 
poorly insulated metal, which can transfer head and cold from outdoors. 
This makes the air right next to them hotter or colder than the rest of the 
inside air. These layers of hotter or colder air can keep some from reaching 
a smoke alarm 

 

Therefore, install smoke alarms in such units only on inside walls. Place 
them between 4 and 6 inches (10 to 15 cm) from the ceiling. If you are 
unsure how much insulation is in your mobile home or RV, put the alarm on 
an inside wall. Or if you notice that the walls or ceiling are not unusually hot 
or cold, put the alarm on the inside wall.  

For minimum security, install one alarm as close to the sleeping area as 
possible. For more security place one alarm in each room. Before you put 
up any alarms read the section in this manual -"Locations Where Smoke 
Alarms Should NOT Be Installed". See RV/Boat drawing for further 
information. 

 

Home Drawing

 

   

      

 

Smoke Alarm

 

Placement for best protection 

 

 

WARNING

TEST  SMOKE  ALARM  OPERATION  AFTER       

VEHICLE/BOAT HAS BEEN IN STORAGE, BEFORE EACH 
TRIP, AND   AT LEAST ONCE PER WEEK DURING USE.  

   Locations Where Smoke Alarms Should NOT Be Installed

For  

 best performance, do not install the smoke alarm in the following locations:  

  Where combustion particles are produced. Combustion particles form 

when something burns. Areas to avoid include poorly ventilated kitchen, 
garages, and furnace rooms. Keep units at least 20 feet from the sources 

of combustion particles (stove, furnace, water heater, space heater, etc.) 
if possible. Ventilate these areas as much as possible.  

  In air streams near kitchens. Air currents can draw cooking smoke into 

the sensing chamber of a smoke alarm near the kitchen.  

  In very damp humid or steamy areas, or directly near bathrooms with 

showers. Keep units at least 10 feet away from showers, saunas, 
dishwashers, etc.   

  Where the temperatures are regularly below 40

o

 F or above, 100

o

 F, 

including unheated buildings, outdoor rooms, porches, or unfinished 
attics or basements.  

  In very dusty, dirty or greasy areas. Do not install a smoke alarm directly 

over the stove or range. Clean a laundry room unit frequently to keep it 
free of dust or lint.  

  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.  

  In insect infested areas. Insects can clog the openings to the sensing 

chamber and cause unwanted alarms.  

  Less than one foot away from fluorescent lights. Electrical "noise" can 

interfere with the sensor.  

  "Dead air" spaces may prevent smoke from reaching the smoke alarm. 

To avoid dead air spaces, install smoke alarms as close to the center of 
the ceiling as possible. If this is not possible, install the smoke alarm at 
least 6 inches from the wall or corner.  

  For wall mounting (if allowed by building codes) smoke alarms should be 

placed between 4 and 5 inches from the wall 

ceiling line.  

  On a peaked, gabled, or cathedral ceiling, keep smoke alarms at least 3 

feet from the highest point (measure the distance horizontally).  

 

 

Smoke Alarm Installation. 
 

  Choose the areas for installation.  

  Take the mounting bracket and mark two holes on the ceiling or wall.  

  Drill holes in the two key positions as marked.  

 

Insert plastic screw anchors into the holes and put mounting bracket 
against wall surface. 

 

  Insert and tighten mounting screws until mounting bracket is fully fixed.   

  This alarm is a tight-closed unit, which cannot be opened (accept for the  

Battery compartment). Insert battery into the compartment on back of 
housing 9-volt battery is the only serviceable part of the alarm. 

 

  Put detector with back to the mounting position and turn clockwise. 

Make sure the 2 screw heads slip over keyhole slots.  

  Test your unit by pressing the test button until the alarm sounds.  

NOTE: Your smoke alarm is equipped with a safety device that resists its 
mounting unless a battery is in place. If your smoke alarm will not lock into 
the mounting bracket, check to make sure the battery is installed correctly. 
Do not attempt to override this safety device, or lock your alarm on the 
bracket with the battery not installed correctly. 

Operation, Testing and Maintenance  

Operation:

 The smoke alarm is operating once the battery is correctly 

connected. The LED will flash every minute to show the battery is supplying 

power to the Alarm. When production of combustion are sensed, the unit 
sounds a loud alarm which continues until the air is cleared  

False Alarms "Mute" control:

 Models (S/SLL) with the mute feature have 

the capability of temporarily reducing the sensitivity of the alarm circuit for 
approximately 10 minutes. This feature is to be used only when a known 
alarm condition such as smoke from cooking activates the smoke alarm. The 
smoke alarm horn is muted by pushing and holding the test button on the 
alarm cover for 5 seconds. The smoke alarm will automatically reduce 
sensitivity and the LED will "flash” every 10-20 seconds for approximately 10 
minutes to indicate the alarm is in temporary mute condition. The smoke 
alarm is completely operational during the mute cycle and will alarm if the 
smoke density increases. After the 10 minute mute cycle the alarm will 
"beep" twice letting you know it has automatically returned to normal 
sensitivity.  

CAUTION:

 

Before using the "mute" feature, identify the source of smoke 

and be certain that safe conditions exist. 

 

Testing:    

Test the alarm by pushing the test button on the smoke alarm 

cover for at least three seconds, until the alarm sounds. The alarm sounds if 

all electronic circuitry, horn and battery are working. If no alarm sounds, the 

unit has a defective battery or other failure and should be replaced 

immediately.  

  Test each smoke alarm weekly to be sure it is installed correctly and 

operating properly.  

  Test smoke alarms upon returning from vacation. Also test when no one 

has been in the household for several days.  

  Stand at arm's length from the smoke alarm when testing. The alarm horn 

is loud to alert you to an emergency. The alarm horn may be harmful to 
your hearing.  

  The test button accurately tests all functions. Never use an open flame 

from a match or lighter to test this smoke alarm. You may ignite and set 
fire to the smoke alarm and your home.  

 

MOBILE HOME, RV and BOAT INSTALLATIONS -- TEST 
SMOKE ALARM OPERATION AFTER VEHICLE/BOAT HAS 
BEEN IN STORAGE, BEFORE EACH TRIP, AND AT LEAST 
ONCE PER WEEK DURING USE. 

 

Maintenance:

 

This smoke alarm has been designed to be as maintenance 

free as possible, but there are a few simple things you must do to keep it 
working properly - 

  Test each smoke alarm at least once a week.  

  Keep a supply of approved 9-volt replacement batteries on hand. 

  Test each smoke alarms used in RVs/Boats after vehicle/boat has been in 

storage, before each trip and at least once per week during use. Failure to 
test smoke alarm used in RV’s/Boats as described may remove your 
protection.  

  Gently vacuum off any dust on the cover of the smoke alarm monthly with 

your vacuum's soft brush attachment. Test unit once you have vacuumed 
the cover.  

  Never use water, cleaners or solvents since they may damage the smoke 

alarm.  

  Relocate the smoke alarm if it sounds frequently with unwanted alarms. 

See section "Locations Where Smoke Alarms Should NOT Be Installed".  

  When the battery becomes weak, the unit will "beep" about once a minute 

(the low battery warning). This, low battery warning should last for 30 
days, but you should replace the battery immediately to continue your 
protection. You must replace the battery immediately once the unit starts 
"beeping" ("the low battery warning").  

 

Replace your Smoke Alarms at least every 10 years. This includes 
models with 10-year batteries (SA-668LL and SA-668SLL). Manufactured 
date code is on the back of the Alarm.

 

 
BATTERY INFORMATION  

Battery Removal Indicator --This Unit will not operate without a battery. 
When the battery is removed from the alarm, the battery flag in the 

compartment will pop up; therefore the alarm cannot be installed to 
the mounting bracket without a battery. 

Battery Replacement

 --This smoke alarm requires one standard 

9Vbattery. The Battery Gold Peak #1604P is approved (Its reference: 
Gold Peak #16048; Eveready #522, #1222, #216; Duracell #MN1604 
and #MN1604B). You may also use the long-Life 10 Year Lithium 
battery Ultralife #U9VL-J.  

WARNING 

Use only the replacement batteries listed. The unit may not operate 
properly, with other batteries. Never use rechargeable batteries since 
they may not provide a constant charge. 

 

Note:

 Most carbon zinc batteries have an average service life of 1 

year; most alkaline batteries have an average service life of 1-2 
years. All the batteries specified above are acceptable replacement 
batteries for this unit.  

IMPORTANT! 

 

Regardless of the manufacturer's suggested battery life, you MUST 

replace it immediately once the unit starts "beeping" ("the low battery 
warning"). 

 

 

Five Year Limited Warranty 

MTI Industries, Inc. (MTI) warrants your MTI smoke alarm against all 
defects in material and workmanship for (5) years from the date of 
purchase. This warranty applies only to the original consumer 
purchaser and only to equipment used in normal use and service If 
this product is found to be defective, MTI's only obligation, and your 
exclusive remedy, is the repair or replacement of the product at 
MTI's discretion, provided that the product has not be damaged 
through misuse, abuse, accident, modifications, alteration, neglect or 
mishandling. This warranty shall not apply to any equipment that is 
found to have been improperly installed, set-up, or used in any way 
not in accordance with the detailed instructions supplied with the 
product. This warranty shall not apply to any batteries used in the 
product (See separate warranty for 10-Year battery) or to any 
damage that may be caused by such batteries. For repair or 
replacement, send the defective product to MTI Industries, Inc 31632 
N. Ellis Drive, Unit 301, Volo, IL 60073, postage prepaid with a 
payment of $8.00 to cover the costs of return postage and handling. 
You must include a proof of purchase (receipt) along with the 
returned product.  

MTI DOES NOT WARRANT AND SPECIFICALLY DISCLAIMS ANY 

WARRANTY, WHETHER EXPRESS OR IMPLIED OF FITNESS FOR A 

PARTICULAR PURPOSE OTHER THAN THE WARRANTY CONTAINED 

HEREIN. NO IMPLIED WARRANTY UNLESS SUCH LAW OTHERWISE 

PROVIDES. MTI SPECIFICALLY DISCLAIMS ANY LIABILITY AND SHALL 

NOT BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL LOSS OR 

DAMAGE, INCLUDING, BUT NOT LIMITED TO, DAMAGES TO ANY 

EQUIPMENT, WITH WHICH THIS PRODUCT IS APART.  

 

 

 

Some states do not allow the exclusion or limitation of incidental or 
consequential damages so the above limitations or exclusions may 
not apply to you. No agent, representative, dealer, or employee of 
the company has the authority to increase or alter the obligations or 
terms of this Warranty. This warranty gives you specific legal rights 
and you may also have other rights that vary from state to state. This 
Warranty is only valid for merchandise purchased from retail outlets 
in the United States and Canada.  

 

31632 N. Ellis Drive Unit 301  

                                          Volo, IL

 

60073  

 

                                

 Customer Service 800-383-0269  www.safetalert.com  
                                 © 2004, MTI lndustries, Inc

 

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