Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Combo with 2 AA Batteries Back Up, 2 in 1 Smoke and CO Detector with Voice Alert, Smoke and CO Alarm with Self-Check, 1 Pack

Wired or Wireless Connection - This smoke and carbon monoxide detector can be hardwired or wirelessly interconnected with as many as 11 other units. When one alarm activates, they all sound and alert everyone to the emergency. Hardwired with 2 AA Battery Backup - The combination smoke and carbon monoxide detector can be interconnected for operation and contains a 2 AA battery backup. If the power fails in your home, the detector will continue to keep you protected. 2 in 1 Protection with Distinct Voice Alarm - This combination smoke and carbon monoxide detector with dual sensors identifies both hazards in one unit, delivering an audible warning exceeding 85 decibels.

The distinct voice alert enables you to promptly determine whether smoke or carbon monoxide is detected, allowing for a more coordinated response. Self-Check Function - This combination smoke and CO detector features a self-check function that eliminates the need for manual testing. Should a detector malfunction, it will inform you promptly to ensure reliable protection. High-Quality Build - The combination detector is engineered for a 10-year operational duration and utilizes a dependable, high-performance chip to deliver robust protection. The products comply with UL 217 and UL 2034 standards