Kidde 10-Year Worry Free 120-Volt Hardwired Smoke Alarms twin pack protects your family for 10-years with a sealed in Lithium Battery backup. The ionization sensors works best at detecting fast flaming fires. These Worry-Free smoke alarms protect against tampering with a sealed-in battery that is tamper resistant to disabling or removing of battery. 10-Year alarms provides an End of Life warning at end of the product life alerting you to replace your smoke alarm. If you require 120-Volt smoke alarm installed the 10-Year battery backup protects even in the event of power loss and also means no battery to replace. Just install and have 10-years of protection from the threat of fire.
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