First Alert Wireless Photoelectric Smoke Alarms link the alarms throughout your home. 120V AC hardwired wireless detectors with battery backup integrate single alarms into a system. Expand protection by replacing one existing hardwired alarm with a First Alert wireless alarm and linking to existing hardwired and battery operated alarms. By adding wireless battery operated alarms elsewhere; when one alarm sounds; all alarms will be notified. Photoelectric smoke sensor reduces nuisance alarms. Easy access battery drawer: no need to remove an alarm from the ceiling to change battery. Includes 10-year limited warranty. Meets UL standards.
* This product is intended for non-professional do it yourself installation. If you would like information about a professionally installed and monitored system, please contact First Alert Professional at 1-800-921-6025. First Alert Professional is not affiliated with BRK Brands, Inc.