FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement

This First Alert hardwired smoke alarm and carbon monoxide detector features an ionization smoke sensing chamber and an electrochemical carbon monoxide sensor. Installation and connection to AC power is easy with the included adapter plugs and "quick-connect" wiring harness so you can you easily replace existing hardwired alarms without needing to rewire. 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 it off have subsided. And an end-of-life signal enhances your safety by letting you know when it's time to replace the unit. Connect it to compatible BRK or First Alert alarms within a single-family residence; connecting will sound all the alarms together.

• Convenient adapter plugs makes it easy to replace existing hardwired alarms without needing to rewire
• Keep your family safe with this hardwired First Alert smoke and carbon monoxide alarm with a 10-year battery backup, which means constant monitoring for the life of the alarm, even if there's a power failure
• Combination smoke alarm and carbon monoxide detector features electrochemical carbon monoxide sensing technology, as well as intelligent smoke sensing technology to reduce nuisance alarms
• 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; includes 10-year lithium battery with a locked drawer to prevent tampering
• 10-year limited warranty; equipped with end-of-life signal, so you know when it's time to replace the unit for your safety
• Rigorously tested to meet UL standards
• To ensure complete protection make sure to place one carbon monoxide detector on each level of your home and in each bedroom