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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 Test/Silence button on the smoke alarm cover 
while in alarm condition. 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 approx. 10 minute Silence feature may be used repeatedly until the air has cleared, by 
pushing and releasing the Test/Silence button again. Resetting the smoke alarm after a nuisance 
alarm is recommended.
NOTE:  If the Test/Silence button is pressed and held during the Silence mode, the smoke alarm 
will  be  tested  normally.  Upon  the  release  of  the Test/Silence  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.

REGULAR  MAINTENANCE: 

Test  the  alarm  at  least  once  per  week  to  verify  it  is  operating 

properly.  
Clean this alarm at least once a month to remove dust, dirt, insects and debris. 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.
DO NOT use spray cleaning chemicals or insect sprays directly on or near the alarm. DO NOT 
paint  the alarm. Doing so may permanently damage the alarm and interfere with alarm’s ability to 
sense smoke. The outside can be wiped with a damp cloth. DO NOT use any household cleaning 
agents, solvents or sprays including compressed gas dusters or any other chemical on or near 
your alarm. DO NOT disassemble or attempt to clean inside the alarm. This alarm contains no 
serviceable parts.
If the alarm becomes contaminated by excessive dirt or grease, and cannot be cleaned, it should 
be replaced immediately. Alarms have a limited life and should always be replaced 10 years from 
the date of purchase.

AFTER CLEANING, REINSTALL YOUR ALARM AND 

TEST YOUR ALARM BY USING THE TEST BUTTON

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).

IMPORTANT CONSIDERATIONS

YOUR ALARM HAS BEEN DESIGNED WITH A PRODUCT END-OF-SERVICE LIFE WARNING 
WHICH WILL SOUND AFTER APPROXIMATELY 10 YEARS OF OPERATION FROM INITIAL 
POWER UP.

NOTE:  MANUFACTURER RECOMMENDS REPLACEMENT OF THIS ALARM 10 YEARS AFTER 
DATE OF INSTALLATION.  NOTE: NUMEROUS ALARMS OR PROLONGED ALARMING IS 
NOT  TYPICAL AND  WILL  CONSUME  THE  BATTERY  CAPACITY,  SHORTENING  THE  LIFE 
OF THIS PRODUCT.

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BATTERY AND ALARM DEACTIVATION

This alarm uses a sealed battery. The battery should last for approximately 10 years under normal 
operating conditions. The smoke alarm has a low battery indicator which is 2 chirps approx. every 
60 seconds. The red LED blinks on once approx. every 2 minutes.

Due to the loud 85 decibel alarm, stand at arm's length away from the alarm or use ear protection 

when testing. Weekly testing is required to ensure proper operation. Irregular or low volume sound 
may indicate a defective alarm and it should be returned for service. Follow instructions   to prepare 
alarm for shipment or disposal.

Summary of Contents for MI3050S

Page 1: ...larm This alarm does not require battery changes The tamper proof permanent power sealed battery which will last for approximately 10 years This manual in cludes important information regarding where to install the alarm how to operate maintenance testing and product features It also in cludes tips and information which can help protect you and your family Conforms to UL Std 217 Single Station Smo...

Page 2: ...ure their lives and properties l 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 l BEAWARE OF VARIOUS SITUATIONSAGAINST WHICH THE SMOKEALARM MAY NOT BE EFF...

Page 3: ... 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 th...

Page 4: ...ed battery cannot be replaced Failure to properly install and activate this alarm will prevent proper operation of this alarm and will prevent its response to fire hazards Test the alarm following installation and weekly thereafter The built in test switch accurately tests the alarm operation as required by ANSI UL217 Standards for Safety If at any time you test the alarm and it does not perform a...

Page 5: ...t button should sound the alarm immediately after it is pressed There are special conditions that when you press the Test Silence button you will experience a delay of approx 10 15 seconds before the alarm sounds This delay occurs if the Test Silence button is pressed during a self diagnostic period This may occur after initial power up Retest after 10 15 seconds ALARM ORIGINATION The QUICK FIND f...

Page 6: ...e alarm DO NOT paint the alarm Doing so may permanently damage the alarm and interfere with alarm s ability to sense smoke The outside can be wiped with a damp cloth DO NOT use any household cleaning agents solvents or sprays including compressed gas dusters or any other chemical on or near your alarm DO NOT disassemble or attempt to clean inside the alarm This alarm contains no serviceable parts ...

Page 7: ... is located in the mounting bracket of the alarm See Figure2 3 Use a small flat blade tool to remove the deactivation key breakaway from the mounting bracket 4 Push tip of key into the deactivation slot keyhole outline on label and insert fully 5 Turn key clockwise to the off position slowly until you feel the switch actuate and the key stops turning 6 This will discharge the alarm battery and sto...

Page 8: ...rm 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 ...

Page 9: ...THIS PRODUCT CONFORMS TO UL STANDARD 217 FOR SAFETY 3 Beeps 2 second pause Repeat Blinks On in sync with Horn If hazard is identified please take all precautions if an alarm sounds by calling an Emergency Service and getting out of the home 3 Beeps 2 second pause Repeat Silence Feature is activated by pressing and releasing the Test Silence button on the initiating alarm while in alarm condition S...

Page 10: ...pplied with this product ALARM RETURNS For replacement of this alarm under the terms of this Warranty contact the Customer Service Department at 800 390 4321 extension 238 to obtain the 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 warr...

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