Solely battery-powered smoke alarms must feature sealed, 10-year batteries. Alarms which receive their power from the electrical system of the building, fire alarm systems with smoke detectors, fire alarm devices that connect to a panel, or other devices that use a low-power radio frequency wireless communication signal are exempt.

Effective date: April 1, 2019

New York City:

All battery-operated smoke alarms must feature a non-removable, non-replaceable battery that powers the alarm for a minimum of 10 years. Alarms must emit an audible end-of-life signal notifying consumers at the expiration of the useful life of the alarm. This requirement applies to pre-1982 buildings that were/are not required to have hard-wired alarms.

Effective date: April 2014