Kidde Combination Photoelectric Smoke & Carbon Monoxide Alarm with Hardwire Interconnect | 900-CUAR

2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device 24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test) Easy installation mounting bracket included for quick installation in 4 orientations