BRK electronic 4120SB, 4120 AC To Unlock the Battery Compartment, To Lock The Mounting Bracket

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To Unlock the Battery Compartment (continued)...

4.To relock the battery compartment, close the battery door and reinsert locking pin in lock.

5.Reconnect the power connector to the back of the Smoke Alarm, reattach the Smoke Alarm to the mounting bracket, and restore the power.

When replacing the battery, always test the Smoke Alarm before relocking the battery compartment.

To Lock The Mounting Bracket:

1.Using needle-nose pliers, detach one

locking pin from the mounting bracket.

2.Insert the locking pin into the lock located on the pivoting hinge of the battery door.

3.When you attach the Smoke Alarm to the mount- ing bracket, the locking pin’s head will fit into a notch on the bracket.

To Unlock The Mounting Bracket

ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Smoke Alarm is installed before removing it from the mounting bracket. Failure to turn off the power first may result in serious electrical shock, injury or death.

Always discharge the branch circuit before servicing an AC or AC/DC Smoke Alarm. First, turn off the AC power at the circuit breaker or fuse box. Next, remove the battery from Smoke Alarms with battery back-up. Finally, press and hold the test button for 5-10 seconds to discharge the branch circuit.

1.Insert a flathead screwdriver between the mounting bracket pin and the mounting bracket.

2.Pry the Smoke Alarm away from the bracket by turning both the screwdriver and the Smoke Alarm counterclockwise (left) at the same time.

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Contents USER’S Manual Smoke AlarmsAC Powered Ionization Smoke Alarm Cat Table of Contents Where to Install Smoke Alarms Nfpa 72 National Fire Code Agency Placement RecommendationsMore specifically, install Smoke Alarms Installing Smoke Alarms in Mobile HomesCalifornia State Fire Marshal Csfm For best performance, do not install the unitAvoiding Dead AIR Spaces Follow the installation recommendations belowIMPORTANT! Read Before YOU Install this Smoke Alarm Read Before You Install This Smoke Alarm Understanding the Indicator Lights and Alarm Horn PatternsTools you will need Important Installation PartsLocking Features To Lock The Battery Compartment Models 4120B and 4120SB Only To Lock The Mounting Bracket To Unlock the Battery CompartmentParts of This Unit HOW to Install this Smoke AlarmBattery BACK-UP on Models 4120SB and 4120B only To install this unit, follow these steps Installing a Single STAND-ALONE Smoke AlarmInterconnecting Multiple Smoke Alarms To install and interconnect multiple alarms Interconnecting Multiple Smoke AlarmsBeeps, pause, 3 beeps, pause Testing and MaintenanceWeekly Testing Regular MaintenanceResponding To An Alarm If this Smoke Alarm SoundsTo silence Smoke Alarms in an interconnected series Model 4120SB only Using the Silence FeatureProtecting Your Family from Fire What to do in Case of Fire If Your Smoke Alarm Needs ServiceTroubleshooting Hotels/Motels Special Compliance ConsiderationsSingle-Family Residence InstitutionsLimitations of Smoke Alarms How to Obtain Warranty Service Year Limited Warranty

4120 AC, 4120SB specifications

The BRK Electronics 4120SB and 4120AC are advanced smoke alarms designed to enhance safety in residential and commercial settings. These alarm models integrate innovative technologies and features that provide reliable performance and peace of mind to users.

The 4120SB model is a battery-operated smoke alarm, making it ideal for applications where hardwired alarms may not be feasible. Utilizing a photoelectric sensor, it is designed to detect smoldering fires, which often produce dense smoke without high flames. This increases the likelihood of early detection, allowing occupants crucial time to evacuate safely. On the other hand, the 4120AC is a hardwired option that connects directly to the building’s electrical system, ensuring uninterrupted power supply while incorporating a battery backup. This guarantees continuous operation, even during power outages.

Both models are equipped with a loud 85-decibel alarm, ensuring that residents are alerted promptly in case of smoke detection. The devices also feature a test/silence button, allowing users to easily test the functionality of the alarm or silence it in the event of a false alarm caused by cooking fumes.

Safety is further enhanced by the incorporation of a Tamper-resistant feature that prevents unauthorized removal of the alarm from its mounted location. The alarm also includes a LED indicator that provides a visual cue of the unit’s operational status. When the unit is powered on and functioning correctly, the green LED will blink periodically. In contrast, a continuous red LED indicates an active alarm condition.

Both the 4120SB and 4120AC are designed for user-friendly installation. The units come with clear instructions and mounting hardware, allowing homeowners and professionals to easily install them in their desired locations. The compact design ensures that they can fit seamlessly into a variety of interiors.

Overall, the BRK Electronics 4120SB and 4120AC represent robust solutions for smoke detection. Their integration of advanced photoelectric technology, user-friendly features, and essential safety mechanisms make them essential components of any fire safety strategy, ensuring that homes and businesses are better protected against the threat of fire. Investing in these smoke alarms not only meets safety regulations but also fosters a proactive approach to fire safety that can save lives.
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