Installing a hard wired ... Fasten the new smoke detector mounting plate to the remodeling box with a screwdriver. Strip 3/4-inch of insulation from the ends of the wires. Use wire nuts to connect ...

The second type is hard-wired. These detectors are powered by the wiring in your home. The benefit of a hardwired smoke detector is that you never have to replace the battery. However, the flip si ...