Smoke Detector Act

Overview of Public Act 200

To be used as a reference to answer questions regarding the Smoke Detector Act (425 ILCS 60/).

  • Every dwelling unit shall be equipped with at least one smoke alarm in an operating condition within 15 feet of every room used for sleeping purposes.
  • On every story of the dwelling unit, including basements, but not including unoccupied attics.
  • The detector shall be installed on the ceiling and at least 6 inches from any wall or on a wall located between 4 and 6 inches from the ceiling.
  • The smoke alarm can be combined with CO detecting devices, provided each unit has a distinct alarm that differentiates the hazard.
  • Failure to install or maintain is a Class B misdemeanor.
  • The owner of the property must supply, install, and maintain all required alarms.
  • Tampering with, removing, destroying, disconnecting, or removing the batteries from any installed smoke alarm is a Class A misdemeanor in the case of the first conviction and a Class 4 felony in the case of a second subsequent conviction.
  • The smoke alarms required under this Act may be:
    • Battery powered (Dwelling units in existence before July 1, 1988)
    • Starting January 1, 2023, any NEW smoke alarm installed in any single or multi-family homes are required to feature 10-year non-removable, non-replaceable sealed batteries. This applies to residences that are using alarms with removable batteries or alarms that are not hardwired. (Smoke alarms installed in single or multi-family homes prior to January 1, 2023 may remain in place until they exceed 10 years from their manufactured date, fails to respond to operability tests, or otherwise malfunctions.)
    • Wired into structure AC power and interconnected (Dwelling units newly constructed, reconstructed, or substantially remodeled after December 31, 1987)
    • Wired into the structure AC power line, interconnected, with battery back-up (Dwelling units newly constructed, reconstructed, or substantially remodeled after January 1, 2011)

Links to Additional Information