About this item

• 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