Wyoming, MI Fire Regulations: Smoke Detectors (2026)

WPMC Sec. 6, amended by Wyoming Code of Ordinances Sec. 10-179(41), requires single- or multiple-station smoke alarms in Group R-2, R-3, and R-4 occupancies and in dwellings not regulated as Group R, regardless of occupant load. Required locations are the ceiling or wall outside each separate sleeping area near bedrooms, inside every room used for sleeping, and on every story of a dwelling unit, including basements and cellars but not crawl spaces or uninhabitable attics; a split-level unit without an intervening door can rely on one alarm on the upper level to cover an adjacent lower level less than a full story down.

The power-source amendment requires primary power from the building's wiring with a battery backup where the building has commercial power service, a low-battery signal, and permanent wiring without a disconnect switch other than for overcurrent protection; battery-only alarms are allowed only in limited situations, such as buildings under no construction, without commercial power, or where removing wall or ceiling finishes to run wiring isn't practical, and those battery units must carry at least a 5-year battery. The rule links directly to Wyoming's rental program: Sec.

4(c)(1)(A) lists smoke or carbon monoxide detector violations among the conditions that shorten a rental property's registration term if found during an inspection or reported within the prior two years.