The law, which joins similar efforts in New York, Colorado, and Minnesota, is tougher than some of its predecessors. Manufacturers must make available appropriate tools, parts, software, and documentation for seven years after production for devices priced above $100. (Less expensive devices only have to have these materials available for three years.)
The bill is effective on electronics made and sold after July 1st, 2021. Though the bill is fairly sweeping, there are carve-outs for game consoles and alarm systems.
Source: The Verge