BRK electronic 4120SB, 4120 AC user manual IMPORTANT! Read Before YOU Install this Smoke Alarm

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IMPORTANT! READ BEFORE YOU INSTALL THIS SMOKE ALARM

Read “Where To Install Smoke Alarms” and “Where Not To Install Smoke Alarms” before beginning. This unit monitors the air, and when smoke reaches its sensing chamber, it alarms. It can give you more time to escape before fire spreads. This unit can ONLY give an early warning of developing fires if it is installed, maintained and located where smoke can reach it, and where all residents can hear it, as described in this manual. This unit will not sense gas, heat, or flame. It cannot prevent or extinguish fires.

ELECTRICAL SHOCK HAZARD. Turn off power to the area where you will install this unit at the circuit breaker or fuse box before beginning installation. Failure to turn off the power before installation may result in serious electrical shock, injury or death.

This unit will not alert hearing impaired residents. It is recommended that you install special units which use devices like flashing strobe lights to alert hear- ing impaired residents.

Installation of this unit must conform to the electri- cal codes in your area; Article 760 of NFPA 70 (NEC), NFPA 72, NFPA 101; SBC (SBCCI); UBC (ICBO); NBC (BOCA); OTFDC (CABO), and any other local or building codes that may apply. Wiring and installa- tion must be performed by a licensed electrician. Failure to follow these guidelines may result in injury or property damage.

This unit must be powered by a 24-hour, 120VAC 60Hz circuit. Be sure the circuit cannot be turned off by a switch, dimmer, or ground fault circuit inter- rupter. Failure to connect this unit to a 24-hour circuit may prevent it from providing constant protection.

This Smoke Alarm must have AC or battery power to operate.

On Models 4120SB and 4120B Only:

If the AC power fails, battery back-up will allow the alarm to sound for at least 4 minutes. If AC power fails and the battery is weak, protection should last for up to 7 days. If AC power fails and the battery is dead or missing, the alarm cannot operate.

It is possible an electrical fire could occur on the circuit powering this unit. If this happened, the power to the unit could be cut off and it may fail to alarm. Some safety experts recommend wiring warning devices like this unit on separate circuits from other appliances, since these circuits are not as likely to be overloaded. Other safety experts recommend wiring these units on the same circuits as appliances so it is more readily apparent if the circuit fails. Whichever circuit you choose, it is recommended you also install battery powered units as back-ups in case of fire on the circuit powering the AC powered units.

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Contents AC Powered Ionization Smoke Alarm Cat Smoke AlarmsUSER’S Manual 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 PatternsLocking Features Important Installation PartsTools you will need To Lock The Battery Compartment Models 4120B and 4120SB Only To Lock The Mounting Bracket To Unlock the Battery CompartmentBattery BACK-UP on Models 4120SB and 4120B only HOW to Install this Smoke AlarmParts of This Unit 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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