•  120 V AC Hardwired Smoke Detector with 9 V capable Battery Backup: This mains-powered smoke detector will continue to function in the event of a power outage due to its replaceable 9 V battery backup, for uninterrupted protection of your home
• Accurate Detection with Photoelectric Smoke Sensor: The XP04-S hardwired photoelectric smoke detector is more responsive to smoldering fires and once detected, instantly alerts you in 2 seconds
• Reliable Interconnected System: Connect up to 18 X-Sense hardwired detectors to create a comprehensive fire safety system and detect potential danger anywhere in your home
• Hardwired Interconnection for Full Coverage: When one alarm is triggered, all alarms will sound together at over 85 dB; you will hear an alarm anywhere in your home, even when you’re sound asleep
• Large Test/Silence Button: Easily test or mute all the interconnected alarms by simply pressing a button using a long stick rather than a ladder, giving you a sense of comfort and safety in your home 

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item.

Warranty: 90 Day Woot Limited Warranty