The partner system will lose programming if it loses power and the batteries are dead. Somewhere is extension 10. If it says replace batteries that is what happened. You need to find the processor. If you are lucky it will have a backup card. If you don't you will need someone to reprogram it. If you do... you can restore the programming. I am not going to explain that process until you know if you have a back up. Here is a link to the full manual...
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