Are you a
Homeowner?
Are you a
Homeowner?
A continuous loud alarm with four beeps means carbon monoxide has been detected – evacuate immediately and call 0800 111 999. A single chirp at regular intervals usually means the battery or sensor is reaching end of life and the unit needs replacing. The 30-day memory function on the FA3820-EUX10 lets you check whether CO was detected while you were away. See our guide to CO alarm beeping for a full explanation of each sound pattern.
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