Wireless Interconnected Photoelectric Smoke Alarm Value Range
Smoke Detector, Hardwired Interconnected Smoke Detectors, Smoke Alarm with Replaceable 9V Battery, Interconnects Up to 12 Fire Alarms Smoke Detectors, Photoelectric Fire Alarm with Test/Silence Button - Amazon.com
Wireless Interconnected smoke alarm
5 x Photoelectric Lithium Interconnected Smoke Alarm
Bundle of Three First Alert Wireless Interconnect Smoke Alarm Voice, Twin Packs