Are Smoke Detectors Required To Be Hard Wired. The smoke alarms shall be interconnected and hard wired. If battery only alarms were installed at the time of construction they can be replaced with battery only alarms.
Existing properties are mandated by law to have mains powered smoke alarm systems. New home builders might be required to install hard wired smoke detectors. On each level and in basements.
The smoke alarms shall be interconnected and hard wired.
Homes built before that date can have battery-powered detectors. Smoke alarms are required to be hard-wired 120 volt. The CO detectors need to be in any area with bedrooms and need to be hardwired in homes built after Jan. This law also applies to homes built before 1992 that have been through major renovation projects.
