Easy to set up with ring alarm.>>>t.co/6i3c0OKJH8 I set it up in a minute and you can tag the device to a specific room. No more wandering the home to locate a low battery beep. The app even shows battery level and can test the device. Let's just say ring and first alert got it right. To make it even easier the alarms attach to existing first alert bases. If you use ring alarm just buy this and you now have professional monitoring.
First and there is a worry free co only alarms I never knew that