FIRST ALERT BRK SC9120LBL Hardwired Smoke and Carbon Monoxide (CO) Detector with 10 Year Sealed Battery Backup, White

The First Alert SC9120LBL alarm features a dual ionization smoke sensing chamber and an electrochemical carbon monoxide sensor, an 85Db horn, and a "silence" feature. This alarm boasts a 10-year battery backup, and the battery drawer is shipped pre-locked to prevent premature battery disposal. Under normal conditions, the battery should not need to be replaced for the life of the alarm.

The "Intelligent Sensing Technology" system is designed to reduce nuisance alarms, while the "Latching Alarm Indication" feature remembers which unit initiated an alarm. When interconnected in a series, the unit that triggered the alarm rapidly flashes its red LED indicator. After the alarm condition subsides, the initiating unit will store the information in memory or "latch" it and begin to flash the LED indicator 2 seconds on, 2 seconds off.

The "Perfect Mount" system features a gasketless base and a mounting bracket that keeps the alarm secure over a wide rotation range, allowing for true alignment. Other contractor-preferred features include a dust cover to keep the alarm clean during construction, and keyhole slots in the mounting bracket that eliminate the need to remove the electrical box screws for installation. Two locking features are provided to prevent battery theft and/or theft of the unit. Connection to AC power is made with a "quick connect" Wiring harness, making installation quick, easy, and cost-effective.

Hardwired Smoke or Carbon Monoxide Alarm Requirements include a 120V household electrical circuit (unswitched 120VAC) and a standard wiring junction box to a 4 in. (10 cm) size, on either the ceiling or wall. Proper location selection is crucial for the effective installation of smoke and carbon monoxide alarms.

This hardwired smoke and carbon monoxide alarm keeps your family safer, with a 10-year battery backup ensuring constant monitoring even during power failures. It features an electrochemical Carbon Monoxide sensing technology and intelligent smoke sensing technology to reduce nuisance alarms. The keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation, streamlining the process.

The alarm's indicator lights display the presence of smoke or carbon monoxide, while an 85-decibel siren provides a clear, loud warning upon detection. It's simple to use, with a single test/silence button, and the included 10-year lithium battery features a locked drawer to prevent tampering.

Rigorously tested to meet UL standards, the alarm emits a T3 pattern and is backed by a 10-year limited warranty. With its end-of-life signal chirp, you'll know when it's time to replace the unit for safety. First Alert, the most trusted brand in home safety since launching the first residential smoke alarm in 1958, offers faster turnarounds on job sites with these easy-to-install and trusted alarms.

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