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I have a Theben timer marked 'SEL 170 top' which has controlled outside lights for about 12 years. It has turned itself off and I am wondering if the internal battery has expired. If so can I replace it somehow? Or is there something else I can do to switch it on again? I'm 87 and would appreciate any advice as the outside lights are important. Many thanks for any help.
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Peter Coogan (in Ireland) email: cooganp@iol.ie Submitted on 1-10-2024 at 17:42