First Alert® Interconnect Battery-Operated 2-In-1 Smoke And CO Alarm With Voice And Location Alerts, 6-3/4”L x 8-1/2”W x 3-1/2”H, White

Create an alarm system for your entire home with this First Alert Interconnect Battery-Operated 2-In-1 Smoke And CO Alarm With Voice And Location Alerts. It can connect with First Alert alarms, BRK alarms and other compatible devices to alert the entire house when smoke or carbon monoxide is detected.