Regular testing and prompt replacement of batteries is generally all that is needed. However, you should follow the manufacturer's specific recommendations for testing. Spider webs, dust and cobwebs can impair detector sensitivity unless you follow the manufacturer's recommendations for cleaning. At Once Batteries will last approximately one year. Have a new battery on hand always.
Some models also have a warning light or flag to indicate that the batteries are weakening.
Nearly half of all previously installed detectors were found to have either no battery or a dead battery. Protect Your Family From Fire Purchase one or more smoke detectors. Install smoke detectors near where individuals sleep. Take care of your smoke detector. Develop and rehearse an escape plan so when your detector sounds, family members react appropriately.