Ohio Rev. Code § 3734.65: Sale or installation of mercury-containing thermostat.

Beginning one year after the effective date of this section, no person shall offer a mercury-containing thermostat for sale in this state or install a mercury-containing thermostat in this state unless the mercury-containing thermostat is installed in the residence of a visually impaired person or the thermostat is used to sense and control temperatures as a part of a manufacturing process.