About this item

• 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)