Kidde Battery Operated Smoke and Carbon Monoxide Combination Detector with Wire-Free Interconnect and Voice Alarm (3-Pack)
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Seal your home with the safety of the Kidde battery-operated combination smoke and carbon monoxide alarms. Install them outside of each sleeping area and on every level of your home to alert you of potential smoke or carbon monoxide elevated levels. This system is wire-free and connects with other Kidde KN-COSM-B-RF units. There is no need for expensive rewiring and they are great to be installed in detached garages or workshops. They require the use of 3 AA batteries.


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