Meet the Roost Smart Battery: a nifty device that turns your smoke alarm a whole lot smarter. It sends you a notification on your phone as soon as your alarm is activated. You get to use the companion app to manage alarms, get notified when your battery is running low, and even set up your emergency contacts.
The device is compatible with iOS and Android devices. It works with smoke and CO detectors that use 9v batteries. The battery life should last more than 5 years. What’s not to like?