MI HB4382

Prohibits distribution, sale, and importation of smoke alarm devices powered by replaceable and removable batteries beginning 18 months after the act's effective date.

Requires smoke alarm devices distributed, sold, offered for sale, or imported to be powered for at least 10 years by either a nonremovable and nonreplaceable battery or another power source utilizing new technology.

Exempts hardwired smoke alarms connected to building electrical systems, centrally monitored or supervised alarm systems, and devices using low-power radio frequency wireless communication or Wi-Fi connectivity.

Authorizes the Department of Licensing and Regulatory Affairs, in consultation with the state fire marshal, to promulgate rules to determine other smoke alarm devices with equivalent characteristics to exempt devices.

Defines "person" to include individuals, businesses, nonprofits, public corporations, government entities, and other legal entities.