The Kidde Smart Smoke Alarm with Ring ($54.97) and the Kidde Smart Smoke and CO Alarm with Ring ($74.97) are hardwired alarms with battery backup and will launch this April at The Home Depot.

Siri can't save First Alert's surprisingly dumb connected smoke alarm Both the $110 battery-powered version and the $120 hardwired version have sealed batteries -- a backup in the case of the ...