I have realized that if one battery in the set of 4 electric detectors is not functional the whole system goes off. This happened last night at 3:30 in the morning. It's really awful to try and change these when the alarm is screaming in your ear. How can I tell which one is the faulty one? I also would like to know how to turn them all off so I can at least change them in peace. The main electrical box does not list them, so I've not idea which breaker to flip off.
By Margaret
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Turn off all the electric with your main switch. Your batteries should be changed twice a year. If you are in the USA, those times are when the time changes in the spring and fall. If you are not in the USA, those dates are Jan 1 and July 1
I change my batteries when daylight savings time begins and ends.
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