Roost

  Check It Out or Buy on Amazon (Paid Link)   Even wired smoke detectors require a battery and when that battery gives up the ghost, usually in the middle of the night, the hunt is on to find the chirping device. Roost enables retrofitting of those old detectors making them smart in a few minutes. Roost is a smart battery in a tradition nine-volt form factor that quickly adds smart device connectivity to typical smoke detectors. It uses an internal lithium battery, not alkaline, to provide power and open up real estate inside the package for the controller and Wi-Fi modules. Set-up requires download of [...]