Wireless

120 V AC Wireless Smoke Alarm with LED Safety Light and 10-Year Sealed Battery Backup

120 V AC Wireless Smoke Alarm with 10-Year Sealed Battery Backup

SA520CNA unit is a 120v with battery back up bridge unit for their ONE-LINK wireless series. This alarm is needed for every wireless set up in order for system to work. 2 x AA batteries included with unit for use during power outages. 

Special Note: PHOTOELECTRIC you must have 1 of these alarms as the BASE for the interconnect system to work