FIRST ALERT SC601A SMK &CO ALRM DESIG EASYINCL 2 AA REPLACEABLE BA

Combo smoke and CO alarm with photoelectric detection and CO sensing. Features replaceable battery, easy install, and eco-friendly packaging. Features an early warning low-battery chirp to signal upcoming battery replacement. Replaceable AA batteries included. SoftCue™ Replacement Reminders - Reduce disruptive alarm chirps by alerting users with gentle sound and light reminders that indicate low battery status LED indicators show alarm status for easy troubleshooting; side-loading battery drawer enables quick changes without removing the unit. Includes standardized mounting brackets and Easy-Fit Mounting Plate for a clean, professional finish without extra touch-ups.