Snap the smoke detector back into its base. 4. There’s an issue with the battery housing or connection. Making sure the battery is inserted and housed correctly is important to the smoke ...

Most fire experts just want working smoke alarms, but hardwired is a great choice in spaces that have wiring. If not, we strongly recommend a battery-only with a built-in 10-year battery.” ...

If the window is opened the connection is lost and the alarm sounds. We see a few problems with this system. First off, never hack your ONLY smoke detector, you are putting lives at risk by doing so.