The requirement is for residential dwellings that have a fuel-burning heater or appliance, a fireplace or an attached garage.
- The alarm must be audible and located within 15 feet of an entrance to each room lawfully used for sleeping.
- The alarm can be battery powered only or plug-in with battery backup.
- The alarm can be a combination smoke/carbon monoxide device.
- The alarm must be listed and comply with UL 2034 Standard.