CO615 first Alert carbon monoxide alarm uses one available electrochemical sensor - the most accurate carbon monoxide. Installing is as simple as connect it to a wall outlet. Its easy to read you digital led backlit display gives a clear reading current concentrations co in parts per million. The alarm includes a battery back-up, giving you peace of mind to a power outage. Test/silent button silences a non-threatening alarm or battery low warning and you can test the functionality of the unit. The unit monitors and re-alarms if carbon monoxide levels persist sounding a Horn of 85-decibel loud. Audio and Visual low battery signal alerts you to replace the battery and an indicator alerts you when a battery has been removed. End of life of three chirps alarm alerts you to replace the unit. A 9 volt battery is included. 5 year limited warranty. UL listed. Bree - Norlander
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A carbon monoxide detector, a battery 9 volt and user manual of
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