For some smoke alarm brands, one weak battery in a wired system can cause “nuisance alarm” smoke detector beeping that cannot be remedied once it starts. In addition, some smoke detectors expire after five to seven years anyway. Unfortunately, you won’t know this unless you have faithfully...
If you want to test a smoke detector, find the test button on the front or side of the unit. Push and hold the button for a few seconds to ensure the alarm sounds. If it doesn’t, you may need to replace the batteries or have an electrician check the wir