I need a way to detect if the lights go off ?
The lights are used to keep my plants worm in the winter. the boxes are sealed for the most part but if one of the lights go out the temp will drop and my plants will die! So I thought if I could some how add back-up lights that would come on.. if one or both lights went out.
Sorry question sounds good in my head but don't know if Am asking the question right. thank you!!