By John D’Annunzio, Columnist, UnionvilleTimes.com Here’s a hot topic: smoke detectors. All new residences are required to have smoke detectors. They must be hard wired with a battery backup. The location in a single family home goes like this: One in each bedroom, one in the hallway, one on each level, and one in the basement. If one is activated all of the alarms will sound. The idea is to...