ALARM/BRACKET

BATTERY LOCKING

2.Insert the pin into the hole for the feature you are activating. Refer to the diagram below for

correct placement.

INSERT ALARM

INSERT BATTERY

LOCKING PIN HERE

LOCKING PIN HERE

TO DEACTIVATE THE LOCKING 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.Turn off AC power to the circuit.

2.Use long nose pliers to pull the locking pin out of the hole.

3.It is now possible to remove the smoke alarm or replace the battery.

WIRING INSTRUCTIONS:

1.a. The appropriate power supply is 120 Volt single phase power supplied from a non-switchable circuit NOT protected by a ground fault circuit interrupter.

b.Turn off AC power to the circuit before wiring the smoke alarm.

c.There are three pigtail wires (black, white and yellow) coming from the AC QUICK CONNECTOR. The proper wire connection is as follows:

WIRES FROM QUICK CONNECTORCONNECT TO

BLACK

"HOT" side of AC line

WHITE

"NEUTRAL" side of AC line

YELLOW

Interconnect wires of other smoke alarms

DO NOT TAMPER WITH WIRES WHEN POWER IS ON!

For alarms that are used as single smoke alarms, do not connect the yellow wire to anything. Insulate this wire (tape it) in place to make certain the yellow wire cannot contact any metal parts.

Interconnected alarms can provide earlier warning of fire than stand-alone alarms, especially if a fire starts in a remote area of the dwelling. When alarms are interconnected, all alarms will sound when one alarm first goes into alarm. This alarm may be interconnected with a total of not more than 24 interconnected devices, i.e., as many as 11 other USI ELECTRIC or UNIVERSAL model smoke alarms or combination smoke and carbon monoxide (CO) alarms; 6 other initiating smoke alarms which may be a combination of USI ELECTRIC or UNIVERSAL CO Alarms and Heat Alarms; and six other non-initiating devices such as USI ELECTRIC Relay Modules. Comparable models include: 2995, 5304, MI100, MI106, MH119, MH120, MDS101, MDS107, MDSS108, MDSCN103, MDSCN111, MPCN104, MPCN110, MCN105, MCN112, MCND114, MCND113, USI-1103, USI-1203, USI-1204, USI-1208 (Part #USI-1209), USI- 1213, USI-3204, USI-7385, USI-7390, USI-7485, USI-7490, USI-7795, USI-2430, USI-960, SS- 785, SS-790, SS-795, SS-2795, SS-2895, CD-9385, CD-9390, CD-9485, CD-9490, CD-9795, HD- 130, RM-100.

Interconnected CO alarms or CO alarm circuit of combination smoke and CO alarms will only respond if a CO alarm / event initiates the alarm. All other alarms remain silent.

Interconnected smoke alarms, heat alarms and relay modules will only respond if a smoke alarm / event or heat alarm / event initiates the alarm. All CO alarms remain silent.

Note that smoke alarms without battery backup will not respond during an AC power failure.

NOTE: Relay Modules/USI-960 will not respond if a CO alarm / event initiates the alarm.

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Universal Security Instruments 3895L, 3304L Wiring Instructions, Wires from Quick Connectorconnect to
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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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