BRK Hard-Wired Ionization Smoke And Carbon Monoxide Detector 1 Each – N/A
Smart Interconnect, interconnects with most First Alert and BRK hardwired alarms, When one alarm sounds, all compatible alarms sound (up to 12 smoke alarms and 6 other CO/heat alarms). Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup.