There are smoke alarms, there are smoke detectors, there are 120V, 12V, 24V and just battery ones with 9V or with other types of batteries.
Read MoreIf they have turned yellow most likely they are over 10 years old and should be replaced.
Read MoreThere are smoke alarms, there are smoke detectors, there are 120V, 12V, 24V and just battery ones with 9V or with other types of batteries.
Read MoreIf they have turned yellow most likely they are over 10 years old and should be replaced.
Read More