b.Interconnected alarms will sound and then stop.

c.The originating smoke alarm will continue to sound 60 seconds to allow ample time to quickly find originating alarm.

RESET: To reset the QUICK FIND® Alarm Origination condition, press and hold the Test button on any alarm for at least 10 seconds and then release. Reset after each alarm. The reset feature will reset all interconnected units.

TROUBLE/SERVICE ALARM: If the smoke alarm chirps 3 times every 40 seconds after the red LED flashes and cannot be restored to normal operation, the smoke alarm should be replaced.

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).

(UTHA) Sensitivity Indicating Means

The sensitivity indicating means for this Smoke and Fire Alarm is the use of the analyzer for Smoke Detectors Model 501-A or 501-A/Bat Aerosol Generator Manufactured by Gemini Scientific Corp., 1122-B Aster Ave., Sunnyvale, CA 94086.

The Equivalent UL 268 Light obscuration %/Ft as measured by this instrument must be between 1.55% Obs./Ft. and 0.85% Obs./Ft (1.20 + 0.35% Obs./Ft.).

(UTHA) Go/No-Go Field Test

The Go/No-Go test for this smoke and fire alarm is to use one of the following UL listed can-type aerosol smoke alarm testers. The instructions for use are printed on the canister. Home Safeguard, Model 25S, No Climb model A3-xxx and SDi model Check02-xxx.

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 2 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 8-12 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.

(UTHA) MAINTENANCE:

The smoke alarm is virtually maintenance free. However, under dusty conditions, a vacuum hose may be used to clear the sensing chamber of dust.

Clean the smoke alarm at least once a month to remove dust, dirt, insects or debris. Always turn off 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.

BACKUP BATTERY REPLACEMENT

Disconnect AC power before changing battery. Shock hazard exists if AC power is miswired.

The smoke alarm uses a 9 Volt battery. The battery should last for at least one year under normal operating conditions. The smoke alarm has a low battery indicator, an audible beep or 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, Duracell #MN1604), Carbon-Zinc type (Gold Peak #1604S) or Lithium type (Ultralife U9VL-J or Ultralife U9VL-J-P) from your local retailer.

LITHIUM Battery Models only - The LITHUM battery is warranted to last for 10 years under normal operating conditions. Replace the battery with only LITHIUM type: (ULTRALIFE: U9VL-J or Ultralife U9VL-J-P).

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Universal Security Instruments 3304L, 3895L installation instructions Utha Sensitivity Indicating Means, Utha Maintenance
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3304L, 3304, 3895, 3895L specifications

Universal Security Instruments (USI) has made a prominent mark in the home security and safety industry with its innovative smoke and carbon monoxide (CO) detectors. Among their standout products are the USI 3895L, 3895, 3304L, and 3304 models, each designed with user-friendly features, advanced technologies, and exceptional reliability.

The USI 3895L is a hardwired smoke and CO detector that features a built-in battery backup, ensuring unwavering protection even during power outages. This model includes a voice alarm system that announces the specific type of danger, whether it be smoke or carbon monoxide, allowing users to respond appropriately. Its continuous self-checking functionality enhances reliability by routinely testing the unit's circuits, battery, and sensors.

The USI 3895, while similar in many ways to the 3895L, emphasizes simplicity and efficiency. This battery-operated model provides a compact design without sacrificing performance. It features a sleek appearance, making it an aesthetic addition to any home, while still offering robust smoke and CO detection capabilities. The 3895 also includes a loud alarm and test/silence button for quick and easy functioning.

Moving on to the USI 3304L, this model is an all-in-one smoke and CO alarm that caters to families and businesses alike. Like the 3895L, it comes with a hardwired setup and a battery backup. The 3304L is particularly praised for its photoelectric smoke sensing technology which minimizes false alarms caused by cooking smoke and steam. This technology increases response times for smoldering fires, giving users valuable time to react.

Lastly, the USI 3304 is a more accessible variant within the same series, designed as a battery-operated smoke and CO detector. Retaining many advanced features of the 3304L, this model is compact and versatile, suitable for various spaces within a home or office. It comes equipped with an LED indicator for operational status and an easy-to-read user manual, ensuring ease of use and installation.

In summary, Universal Security Instruments' 3895L, 3895, 3304L, and 3304 models each provide essential life-saving features with cutting-edge technology. From voice alarms and photoelectric sensing technology to reliable battery backup options, USI delivers robust solutions for fire and carbon monoxide safety. Employing these detectors can significantly enhance home safety while providing peace of mind for families and property owners alike.
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