The First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide Detector features an ionization smoke sensing chamber and an electrochemical carbon monoxide sensor. The 10 Year Battery Backup allows for continued monitorin...

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Product Review

The First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide Detector features an ionization smoke sensing chamber and an electrochemical carbon monoxide sensor. The 10 Year Battery Backup allows for continued monitoring, for the life of the alarm. Intelligent sensing technology is designed to reduce nuisance alarms; one button silences them if they do occur, and also tests detector functions. The latching alarm indicator automatically identifies which unit initiated the alarm, even after the conditions that set off the alarm have subsided. And an end-of-life signal enhances your safety by letting you know when it's time to replace the unit. Two locking features prevent battery tampering, and installation and connection to AC power is easy with the "quick-connect" wiring harness. Connect it to compatible BRK or First Alert alarms within a single-family residence; connecting will sound all the alarms together.

  • Keep your family safer with this hardwired smoke and carbon monoxide alarm; The 10 year battery backup means constant monitoring for the life of the alarm even if there's a power failure, Single button test/silence
  • Features an electrochemical Carbon Monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms; Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
  • Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering
  • 10-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety
  • Rigorously tested to meet UL standards, Emits T3 pattern
  • Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
  • First Alert warranty extends ten years from the date of purchase with proof of the original sales receipt and the product should be free from defect in material and workmanship

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