Kidde KN-COSM-IBA - Hardwired Combination Carbon Monoxide u0026 Smoke Alarm - 6 Pack

Smart InterconnectTM-Interconnects up to 24 Kidde devices (of which 18 can be initiating). Battery Backup (2-AA batteries included)-Provides protection during power outages. Front Loading Battery Door-Replace the backup batteries without disconnecting from mounting bracket Battery Lockout System-The