Universal Security Instruments MP308 User manual

READ ALL INSTRUCTIONS
Table of Contents: Page #
Smoke Alarm Limitations and Functions ................................. 2
Recommended Location of Alarms ......................................... 3
Avoid These Locations ........................................................... 4
Early Warning ......................................................................... 4
Installation Instructions ........................................................... 4
Locking/Tamper Feature ......................................................... 4
Operation, Testing & Maintenance .......................................... 5
RV Installation ........................................................................ 5
Quick Find®Alarm Originating Feature & Reset ..................... 5
Cautions/Warnings ................................................................. 6
Battery Replacement .............................................................. 6
Develop and Practice a Plan of Escape .................................. 7
Operational Summary ............................................................. 8
Warranty .................................................................Back Cover
MODEL MP308, MP308L
MODEL MP508, MP508L
BATTERY POWERED
SMOKE & FIRE ALARM WITH
SILENCE FEATURE AND ALARM ORIGINATION FEATURE

Page 2
SMOKE ALARM LIMITATIONS AND FUNCTIONS
There are three basic smoke alarm types: IoPhic , Ionization and Photoelectric.
IoPhic is an ionization alarm containing a patent-pending Universal Smoke Sensing Technology.
IoPhic alarms are very effective at detecting fast flaming fires and also respond very quickly to
slow smoldering fires - up to 87% faster than the maximum allowable alarm limit (UL217 Smoldering
Smoke Test on 5/26/2010, Underwriters Laboratories Project #09CA38078).
Ionization smoke alarms are typically more effective at detecting fast flaming fires - fires which consume
combustible materials rapidly and spread quickly. Sources of these fires may include paper burning in a
wastebasket, or kitchen grease fires.
Photoelectric smoke alarms, on the other hand, are typically more effective at detecting slow smoldering
fires - fires which burn for hours before bursting into flame. Sources of these fires may include cigarettes
burning in couches or bedding.
Installing IoPhic smoke alarms ensures maximum detection of both types of fires from a single alarm,
while eliminating the need for a combination of ionization and photoelectric smoke alarms.
The enclosed alarm is a Photoelectric smoke alarm.
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SMOKE ALARMS WILL NOT WORK DURING A LOSS OF POWER. SINCE A SMOKE ALARM WILL
NOT WORK WITHOUT POWER, having an alarm(s) that works from two completely different power
sources, such as an AC direct wire with battery backup smoke alarm, can give you an extra measure of
protection in case of an AC power failure or a dead battery. Battery operated alarms cannot work if the
batteries are missing, disconnected or dead, if the wrong type of batteries are used or if the batteries are
not installed correctly. AC (only) powered alarms cannot work if the AC power is cut off for any reason. If
you are concerned about the limitations of the battery or AC power, install both types of alarms.
USING AN IONIZATION SMOKE ALARM IN A SMOKY AREA, SUCH AS A KITCHEN, OR IN A HIGH
HUMIDITY AREA NEAR A SHOWER, CAN CAUSE NUISANCE FALSE ALARMS. IT IS PREFERABLE
TO USE PHOTOELECTRIC ALARMS IN THESE AREAS. DO NOT TURN OFF THE AC POWER TO
QUIET THE ALARM. A SMOKE ALARM WILL NOT HELP PROTECT YOU IF IT IS NOT POWERED.
Properly locate your alarm to avoid nuisance alarms.
A SMOKE ALARM MAY NOT ALWAYS WARN YOU ABOUT FIRES CAUSED BY CARELESSNESS
AND SAFETY HAZARDS LIKE SMOKING IN BED, VIOLENT EXPLOSIONS, ESCAPING GAS,
IMPROPER STORAGE OF FLAMMABLE MATERIALS, OVERLOADED ELECTRICAL CIRCUITS,
CHILDREN PLAYING WITH MATCHES, NATURAL CAUSES SUCH AS LIGHTNING, OR ARSON. FIRE
PREVENTION IS YOUR BEST SAFEGUARD.
INSTALLING SMOKE ALARMS MAY MAKE YOU ELIGIBLE FOR LOWER INSURANCE RATES, BUT
SMOKE ALARMS ARE NOT A SUBSTITUTE FOR INSURANCE. Homeowners and renters alike should
continue to insure their lives and properties.
SMOKE ALARMS CANNOT DETECT FIRES IF THE SMOKE DOES NOT REACH THEM. Smoke from
fires may not reach the sensing chamber and set off the alarm. One alarm should be installed inside each
bedroom or sleeping area. Do not obstruct airflow around the smoke alarm or place in areas of obstructed
airflow.
BE AWARE OF VARIOUS SITUATIONS AGAINST WHICH THE SMOKE ALARM MAY NOT BE
EFFECTIVE. For example: (1) Fires where the victim is intimate with a flaming initiated fire; for example,
when a person's clothes catch fire while cooking; (2) Fires where the smoke is prevented from reaching
the alarm due to a closed door or other obstruction or (3) Incendiary fires where the fire grows so rapidly
that an occupant's egress is blocked even with properly located alarms.
SMOKE ALARMS MAY NOT DETECT FIRE ON ANOTHER FLOOR OR AREA OF THE HOME.
Recommended minimum protection is at least one smoke alarm in every sleeping area and every bedroom
on every level of your home. Interconnected smoke alarms may provide earlier warning than stand-alone
smoke alarms since all smoke alarms alarm when one detects smoke.
SMOKE ALARMS MAY NOT BE HEARD. The alarm horn in this alarm meets or exceeds current standards,
but it may not be heard if: (1) the smoke alarm is located outside a closed or partially closed door; (2)
residents recently consumed alcohol or drugs; (3) the alarm is drowned out by noise from stereos, TV's,
air conditioners or other appliances; (4) residents are hearing impaired or (5) if residents are sleeping.
CURRENT STUDIES HAVE SHOWN SMOKE ALARMS MAY NOT AWAKEN ALL SLEEPING
INDIVIDUALS AND THAT IT IS THE RESPONSIBILITY OF INDIVIDUALS IN THE HOUSEHOLD WHO
ARE CAPABLE OF ASSISTING OTHERS TO PROVIDE ASSISTANCE TO THOSE WHO MAY NOT BE
AWAKENED BY THE ALARM SOUND OR TO THOSE WHO MAY BE INCAPABLE OF SAFELY
EVACUATING THE AREA UNASSISTED.
SMOKE ALARMS ARE NOT FOOLPROOF. You must test the smoke alarm weekly to ensure your
continued protection. Smoke alarms cannot prevent or extinguish fires.
SMOKE ALARMS HAVE A LIMITED LIFE. The smoke alarm should be replaced immediately if it is not
operating properly. You should always replace a smoke alarm after 10 years.
SMOKE ALARMS ARE NOT TO BE USED WITH DETECTOR GUARDS UNLESS THE COMBINATION
HAS BEEN EVALUATED AND FOUND SUITABLE FOR THAT PURPOSE.

RECOMMENDED LOCATION OF ALARMS
• Locate the first smoke alarm in the immediate area of the bedrooms. Try to protect the escape
route as the bedrooms are usually farthest from an exit. If more than one sleeping area exists,
locate additional smoke alarms in each sleeping area. If a hall is more than 40 feet (12 meters)
long, install a smoke alarm at each end.
• Locate additional smoke alarms to protect any stairway as stairways act like chimneys for
smoke and heat.
• Locate at least one smoke alarm on every floor level.
• Locate a smoke alarm in any area where a smoker sleeps or where electrical appliances are
operated in sleeping areas.
• Smoke, heat and other combustion products rise to the ceiling and spread horizontally. Mounting
the smoke alarm on the ceiling in the center of the room places it closest to all points in the room.
Ceiling mounting is preferred in ordinary residential construction. However, in mobile homes, wall
mounting on an inside partition is preferred to avoid the thermal barrier that may form at the ceiling.
• When mounting smoke alarm on the ceiling, locate it a minimum of 4" (10cm) from a side wall or
corner (see Diagram A).
• When mounting smoke alarm on a wall, if local codes allow, use an inside wall with the top edge
of the smoke alarm a minimum of 4" (10cm) and a maximum of 12" (30.5cm) below the ceiling/
wall intersections (See Diagram A).
Page 3
Sloped Ceilings (Peaked Ceilings):
Smoke alarms or smoke detectors mounted on a peaked ceiling shall be located within 36 in. (914 mm)
horizontally of the peak, but not closer than 4 in. (102 mm) vertically to the peak.
Sloped Ceilings (Shed Ceilings):
Smoke alarms or smoke detectors mounted on a sloped ceiling having a rise greater than 1 ft. in 8 ft. (1 m
in 8 m) horizontally shall be located within 36 in. (914 mm) of the high side of the ceiling, but not closer
than 4 in. (102 mm) from the adjoining wall surface.
Tray-Shaped Ceilings:
Smoke Alarms or smoke detectors shall be installed on the highest portion of the ceiling or on the sloped
portion of the ceiling within 12 in. (305 mm) vertically down from the highest point.
Mobile Home Installation:
For minimum protection, smoke alarms should be installed in compliance with H.U.D. Manufactured Home
Construction Safety Standards, Title 24 CFR, Section 3280.208 and Section 3282. For additional protection,
see Single Story Residence smoke alarm requirements/recommendations for Existing Homes and New
Construction Homes.
Note: For mobile homes built before 1978, install smoke alarms on inside walls between 4” and 12” from
the ceiling (older mobile homes have little or no insulation in the ceiling). This is especially important if the
ceiling is unusually hot or cold.
Install a smoke alarm inside each bedroom and in the hallway outside each separate sleeping area.
Existing Homes:
The NFPA requires a smoke alarm on every level and outside each sleeping area in existing construction.
An existing household with one level and one sleeping area is required to have one smoke alarm.
New Construction Homes and Manufactured Homes:
The NFPArequires AC-powered, interconnected smoke alarms to be installed inside each bedroom, outside
each bedroom area, and on every level of the home. They also require a minimum of two AC-powered,
interconnected smoke alarms in any new construction home.

INSTALLATION INSTRUCTIONS: CAUTION!! READ CAREFULLY.
CAUTION: THIS SMOKE ALARM IS SEALED. THE COVER IS NOT REMOVABLE!
• A mounting bracket is provided on the back of the alarm.
• Remove the mounting bracket from the back of the alarm by holding the mounting bracket and
twisting the alarm in the direction indicated by the "TWIST TO REMOVE" arrow on the side of the
alarm base.
OPTIONAL TAMPER RESISTANT FEATURES: There are two separate tamper resistant locking
features provided for this model. Activating one or both of these features deters someone from
removing the smoke alarm from the mounting bracket or removing the battery from the alarm. The
breakaway locking pins are clearly marked and molded into the mounting bracket. Refer to the
diagram on the next page.
TO ACTIVATE THE LOCKING FEATURES: Do not activate the locking features until you have
activated the battery, mounted the smoke alarm to the bracket and tested the smoke alarm. Refer to
OPERATION, TESTING & MAINTENANCE instructions on Page 6.
1. Detach the breakaway alarm locking pin from the mounting bracket.
AVOID THESE LOCATIONS
• the garage – products of combustion are produced when you start your vehicle.
• near appliances or areas where normal combustion regularly occurs (kitchens, near furnaces,
gas hot water heaters). Use smoke alarms with photoelectric sensors or smoke alarms with
Silence Feature for these areas.
• in areas with high humidity, like bathrooms or areas near dishwashers or washing machines.
Install at least 3 feet (0.9 meters) away from these areas.
• in areas of turbulent air such as air returns or heating and cooling supply vents, smoke alarms
shall not be located where airflow prevents smoke from reaching the alarms.
• in extremely dusty, dirty or insect-infested areas. Loose particles interfere with smoke alarm operation.
• in areas where temperature may fall below 400F (4.40C) or rise above 1000F (37.80C).
• closer than 1 foot (0.3m) from fluorescent lights, electrical "noise" and flickering may affect the
alarm's operation.
• closer than 3 feet (0.9m) horizontal path from the tip of the blade of a ceiling suspended (paddle) fan.
• on a poorly insulated ceiling or exterior wall (mount smoke alarm on an inside wall).
Page 4
Early warning fire detection is best achieved by the installation of fire detection equipment in
all rooms and areas of the household as follows: A smoke alarm installed in each separate
sleeping area (in the vicinity of, but outside of, the bedrooms); and, as appropriate, heat or
smokealarmsinlivingrooms, dining rooms, kitchens, hallways, attics, furnace rooms,closets,
utility storage rooms, basements and attached garages. Test the alarms weekly to assure
proper operation.
2. Insert the pin into the hole for the feature you are activating. Refer to the diagram below for
correct placement.
THIS SMOKE ALARM WILL NOT WORK WITHOUT A GOOD BATTERY
PROPERLY INSTALLED. THE SMOKE ALARM SHOULD BE TESTED WHEN
INSTALLED AND THEN TESTED WEEKLYAFTER THAT.
ALARM/BRACKET
LOCKING PIN
BATTERY LOCKING PIN
INSERT ALARM
LOCKING PIN HERE
INSERT BATTERY
LOCKING PIN HERE

TODEACTIVATETHELOCKING FEATURES: To remove the smoke alarm for cleaning or servicing
or to replace the battery, you must first remove the appropriate locking pin, if it has been installed.
1. Use long nose pliers to pull the locking pin out of the hole.
2. It is now possible to remove the smoke alarm or replace the battery.
Page 5
MOUNTING INSTRUCTIONS
1. Attach the mounting bracket to the wall or ceiling (your preference).
2. To activate 9 volt battery and alarm, hold the QUICK DRAW(R) battery drawer closed, pull and
remove the PULL-TAB. Confirm that the entire PULL-TAB has been completely removed.
Discard PULL-TAB.
3. Push and twist the alarm clockwise onto the mounting bracket.
4. See "OPTIONAL TAMPER RESISTANT FEATURES" and "TO ACTIVATE THE LOCKING
FEATURES" instructions on Page 4.
5. The red LED blinks on every 40-45 seconds to indicate proper operation.
OPERATION, TESTING & MAINTENANCE
OPERATION: The smoke alarm is operating once the battery power is connected by removing the
pull-tab. When products of combustion are sensed, the alarm sounds a loud alarm which continues
until the air is cleared.
This alarm incorporates the NFPA recognized horn signal for evacuation. During alarm mode, the
horn produces three long beeps followed by a two second pause and then continually repeats.
READY/ACTIVE CONDITION: The red LED blinks on once approx. every 40-45 seconds to indicate
the alarm is properly functioning.
ALARM CONDITION: The red LED blinks on once approx. every second and the alarm emits a
loud, pulsating alarm sound.
NUISANCE ALARMS: The smoke alarm is designed to minimize nuisance alarms. Smoking will
not normally set off the alarm unless smoke is blown directly into the smoke alarm. Combustion
particles from cooking may set off the alarm if the smoke alarm is located close to the kitchen
cooking surface. Large quantities of combustion particles are generated from spills or broiling.
If the smoke alarm does sound, check for fires first. If a fire is discovered, get out and call the fire
department. If no fire is present, check to see if one of the reasons listed above may have caused
the alarm. Use the Silence Feature if it is a nuisance alarm, or reset the alarm by pressing and
holding the test button for ten seconds. Refer to RESET below.
NOTE: It is best to "reset" the alarms before initial test is performed. See below for Reset instructions.
TESTING: Test by pushing the Test button on the smoke alarm cover until the alarm sounds, then
release. The alarm sounds if all electronic circuitry, horn and battery are working. If no alarm sounds,
the alarm may have a power supply failure. Testthesmokealarm weeklytoassure proper operation.
RV INSTALLATION
WARNING: TEST SMOKE ALARM OPERATION AFTER VEHICLE HAS BEEN IN STORAGE,
BEFORE EACH TRIPAND AT LEAST ONCE PER WEEK DURING USE. An identical marking is to
be provided by the recreational vehicle manufacturer that shall be permanent and located visibly,
within 24 inches (810mm) of the smoke alarm.
ALARMORIGINATION:The QUICK FIND®feature will allow you to immediately locate the originating
alarm (once the alarm has stopped sounding). To initiate QUICK FIND®, press the Test/Silence
button on each alarm. After releasing the button, the originating alarm will continue to sound for
approx. 60 seconds. In a non-interconnected installation, it is necessary to test each alarm to
determine the originating alarm.
RESET: To reset the QUICK FIND®Alarm Origination Mode - Hold the Test/Silence button for
approx. 10 seconds, or temporarily remove (and then replace) the battery. This will clear
alarm origination indicator.
END-OF-SERVICE LIFE NOTIFICATION: A majority of home fire deaths are a result of no smoke
alarms or no workingsmoke alarms. In addition to the "replace by date" stamped on the back of your
alarm, your alarm contains a unique audible end-of-service life notification feature. When it is time
to replace your alarm, which is approximately 10 years from the date of installation, the alarm will
sound 1 beep approximately every 35 seconds and the red LED blinks approximately 3 times. The
product end-of-service life can be temporarily silenced for a 24-hour period for up to 25 days. After
25 days, the warning cannot be silenced. The alarm should be replaced immediately.

If you choose to use an aerosol smoke product to test the smoke alarm, be certain to use one
that has been Listed to Underwriters Laboratories, Inc. Safety Standards and use it only as
directed. Use of non-UL Listed products or improper use of UL Listed products may affect
the smoke alarm's sensitivity.
NUISANCE ALARM SILENCE FEATURE: This feature is to be used only when a known alarm
condition, such as smoke from cooking, activates the smoke alarm. The smoke alarm Silence
Feature is activated by pushing and releasing the Silence button on the smoke alarm cover. The
smoke alarm will automatically reduce sensitivity and the red LED will blink on approx. every 10
seconds to indicate the alarm is in the Silence mode. The smoke alarm will gradually regain normal
sensitivity and sound the alarm if particles of combustion are still present. The approximate 10
minute Silence feature may be used repeatedly until the air has cleared, by pushing and releasing
the Silence button again. Resetting the smoke alarm after a nuisance alarm is recommended.
NOTE: If the Test button is pressed and held during the Silence mode, the smoke alarm will be
tested normally. Upon the release of the Test button, the Silence mode will be restarted.
Before using the alarm Silence Feature, identify the source of smoke and be certain that safe
conditions exist.
Clean the smoke alarm at least once a month to remove dust, dirt, insects or debris. Always disconnect
the battery power to smoke alarm before cleaning. Using a soft brush or wand attachment to a vacuum
cleaner, vacuum all sides and cover of smoke alarm. Be sure all the vents are free of debris.
If the smoke alarm is false alarming and cannot be restored to normal operation, the smoke alarm
should be replaced.
BATTERY REPLACEMENT
This smoke alarm requires a 9 Volt Alkaline or Lithium battery. The battery should last for at least
one year under normal operating conditions. The smoke alarm has a low battery indicator, an audible
chirp. It will operate at approx. 40 second intervals for a minimum of 7 days. When this indication
occurs, replace the battery with an Alkaline type Energizer #522 or Lithium type Energizer LA522,
Ultralife U9VL-J or Ultralife U9VL-J-P from your local retailer.
Lithium Battery Models only - The Lithium battery is warranted to last for 10 years*
under normal operating conditions. Replace the battery with only Lithium type Energizer
LA522 or Ultralife U9VL-J or U9VL-J-P.
OPTIONAL BATTERY DRAWER TAMPER LOCKING PIN: To make your battery drawer tamper
resistant, a locking pin has been provided (breakaway part on mounting bracket).
NOTE: If this feature has been activated, you will need to deactivate it by removing the battery
drawer tamper pin located at side of battery drawer. Refer to Page 5.
Pull the QUICK DRAW(R) battery drawer open and remove the battery. While observing polarity,
push the replacement battery into the battery drawer until it is held securely in place. Carefully close
the battery drawer and reinstall the tamper pin.
Test the smoke alarm by pushing the TEST button on the smoke alarm cover until the alarm sounds,
then release.
REPAIRS AND SERVICES
If the smoke alarm is defective in any way, do not tamper with the smoke alarm. Return the smoke
alarm for servicing. (See warranty for instructions or in-warranty returns.) There will be a service
charge for repairing out of warranty smoke alarms.
DEVELOP AND PRACTICE A PLAN OF ESCAPE
BASICS OF ESCAPE PLAN
o Make a floor plan indicating all doors and windows and at least two escape routes from each
room. Second story windows may need a rope or chain ladder.
o Have a family meeting and discuss your escape plan, showing everyone what to do in case of fire.
o Determine a place outside your home where all of you can meet if a fire occurs.
o Familiarize everyone with the sound of the smoke alarm and train them to leave your home when
they hear the sound.
o Identify children's bedrooms with red stickers placed in the upper left corner of the windows. They
are available from your local fire department.
o Practice a fire drill at least every six months. Practice allows you to test your plan before an
emergency. You may not be able to reach your children. It is important they know what to do!
Page 6
NEVER use an open flame of any kind to test this smoke alarm. You might accidentally
damage or set fire to the smoke alarm or to your home. The built-in test switch accurately
tests the smoke alarm's operation as required by Underwriters Laboratories Inc. (UL).

WHAT TO DO WHEN THE ALARM SOUNDS
o Leave immediately by your plan of escape. Every second counts, so don't waste time getting
dressed or picking up valuables.
o In leaving, don't open any inside door without first feeling its surface. If hot, or if you see smoke seeping
through cracks, don'topenthatdoor! Instead, use your alternate exit. If inside door is cool, place your
shoulder against it, open it slightly and be ready to slam it shut if heat and smoke rush in.
o Stay close to the floor if air is smoky. Breathe shallowly through a cloth, wet if possible.
o Once outside, go to your selected meeting place and make sure everyone is there.
o Call the fire department from your neighbor's home – not from yours!
o Don't return to your home until fire officials say that it is all right to do so.
NATIONAL FIRE PROTECTION ASSOCIATION REQUIRED INFORMATION
For your information, the National Fire Alarm Code, NFPA 72, reads as follows:
"11.5.1 *Required Detection - Where required by applicable laws, codes, or standards for a specific
type of occupancy, approved single and multiple-station smoke alarms shall be installed as follows:
(1) *In all sleeping rooms and guest rooms
(2) *Outside of each separate dwelling unit sleeping area, within 6.4 m (21 ft) of any door to a
sleeping room, the distance measured along a path of travel
(3) On every level of a dwelling unit, including basements.
(4) On every level of a residential board and care occupancy (small facility), including basements
and excluding crawl spaces and unfinished attics
(5) *In the living area(s) of a guest suite
(6) In the living area(s) of a residential board and care occupancy"
The equipment should be installed using wiring methods in accordance with the
National Fire Protection Association's Standard 72.
(National Fire Protection Association, Batterymarch Park, Quincy, MA 02269)
CAUTION (AS REQUIRED BY THE CALIFORNIA STATE FIRE MARSHAL)
"Early warning fire detection is best achieved by the installation of fire detection equipment in all rooms and areas of the
household as follows. A smoke alarm installed in each separate sleeping area (in the vicinity of, but outside of the
bedrooms), and heat or smoke detectors in the living rooms, dining rooms, bedrooms, kitchens, hallways, attics, furnace
rooms, closets, utility and storage rooms, basements and attached garages.
Page 7

Page 8
Blinks On once
approx every
40-45 seconds
Condition: DC Power is present.
Recommendation: None, alarm is operating properly.
OPERATIONAL SUMMARY
Silent
Blinks On
approx every
2 seconds
Condition: Nuisance Alarm.
Recommendation: If there is no hazard present, verify the alarm is mounted in the
correct location (see User's Manual, "AVOID THESE LOCATIONS" section). Reset alarm
as instructed below.
3 Beeps,
2 second pause,
Repeat
Blinks On
approx every
2 seconds
Condition: Originating Smoke Alarm.
Recommendation: If hazard is identified, please take all precautions if an alarm sounds
by calling an Emergency Service and getting out of the home.
Blinks On once
approx every
40-45 seconds
(normal operation
mode) or Blinks On
once approx every
10 seconds
(silence mode)
Condition: One alarm has sensed smoke.
Recommendation: QUICK FIND®Alarm Origination - The QUICK FIND®feature will
allow you to immediately locate the originating alarm (once the alarms have stopped
sounding). To initiate QUICK FIND®, press the Test/Silence button on any alarm. After
releasing the button, the originating alarm will continue to sound for approx 60 seconds.
In a non-interconnected installation, it is necessary to test each alarm to determine the
originating alarm.
Blinks On once
approx every
40-45 seconds
Condition: Alarm needs to be reset due to varying conditions/previous alarms.
Recommendation:To Reset the Alarm, hold the Test/Silence button for approx 10 seconds
or temporarily remove (and then replace) the battery. This will clear alarm origination.
Reset alarm after every alarm event.
Silent
1 Chirp
approx every
40 seconds
Condition: Low Battery
Recommendation:Check to make sure the battery activation pull tab has been completely
removed, battery polarity is correct and the battery terminals are making contact with the
smoke alarm contacts in the battery drawer. If chirp continues, replace the 9V battery
(see User's Manual for recommended battery types).
3 Beeps,
2 second pause,
Repeat
Silent
(alarmed
previously)
CONDITION / RECOMMENDATION
HORN RED LED
Blinks On once
approx every
40-45 seconds
(normal operation
mode) or Blinks On
once approx every
10 seconds
(silence mode)
AUDIBLE & VISUAL SIGNALS
Blinks On 3 times
approx every
35 seconds
1 Beep
approx every
35 seconds
Condition: Product End-of-Service Life alarm.
Recommendation: Replace alarm immediately. The product end-of-service life alarm
can be temporarily silenced for a 24 hour period for up to 25 days. After 25 days, the
warning cannot be silenced. The alarm should be replaced immediately.
Blinks On
approx every
2 seconds
Condition: Alarm has sensed smoke.
Recommendation:Silence Feature is activated by pressing and releasing the Test/Silence
button on the initiating/originating alarm while in alarm condition. Silence mode will last
for approx. 10 minutes with the red LED blinking once approx. every 10 seconds.
3 Beeps,
2 second pause,
Repeat
Blinks On once
approx every
40-45 seconds
3 Beeps approx
every 40 seconds
after LED flashes
Condition: Trouble/Service Alarm.
Recommendation: Replace Alarm.

©2010 UNIVERSAL SECURITY INSTRUMENTS, INC., Rev. 07/2013
Printed in China288-3455-06
PRODUCT TEN-YEAR LIMITED WARRANTY
MODELS MP308, MP308L
MODELS MP508, MP508L
USI ELECTRIC, INC. / UNIVERSAL SECURITY INSTRUMENTS, INC. (“USI”) warrants your
product to be free from defects in material and workmanship for a period of ten (10) years
from the date of purchase. This warranty shall not apply to any batteries used in the product or
to any damage which may be caused by such batteries. This warranty applies only to the original
consumer purchaser and only to products used in normal residential use and service. If this
product is found to be defective, USI’s only obligation, and your exclusive remedy, is the repair or
replacement of the product, at USI’s discretion, provided that the product has not been damaged
through misuse, abuse, accident, modifications, alteration, neglect or mishandling. This Warranty
shall not apply to any product which is found to have been improperly installed, set-up, or used in
any way not in accordance with the instructions supplied with the product.
ALARM RETURNS
For replacement of this alarm under the terms of this Warranty, contact Customer Service at 1-
800-390-4321, Ext. 238, for current postage and handling fees. USI 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 ON THIS PRODUCT, CREATED BY STATE LAW, SHALL
EXTEND BEYOND THE TERM OF THIS WARRANTY UNLESS SUCH LAW OTHERWISE
PROVIDES. USI 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 USED. 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 which vary from
state to state. This Warranty is only valid for merchandise purchased from outlets in the United
States and Canada. This warranty expires upon product end-of-service life signal.
LITHIUM BATTERYLIMITED WARRANTY
The Ultralife battery models U9VL-J and U9VL-J-P are warranted by Ultralife Corporation in this
alarm ONLY and are not warranted in any other device. Submit your warranty claim through the
Ultralife website www.ultralifecorp.com or call 800-332-5000.
Visit Us on the Web! www.UniversalSecurity.com
11407 Cronhill Drive, Suite A
Owings Mills, Maryland 21117 USA