2. By imprisonment for:
a. Not more than 6 months for a first conviction.
3. For a second conviction, by mandatory placement for a period of at least 1 year, at the convicted person’s sole expense, of an ignition interlock device approved by the department in accordance with Section 316.1938 upon all vehicles that are individually or jointly leased or owned and routinely operated by the convicted person, when the convicted person qualifies for a permanent or restricted license. The installation of such device may not occur before July 1, 2003.
(b)1. Any person who is convicted of a third violation of this section for an offense that occurs within 10 years after a prior conviction for a violation of this section commits a felony of the third degree, punishable as provided in s. 775.082, s. 775.083, or s. 775.084. In addition, the court shall order the mandatory placement for a period of not less than 2 years, at the convicted person’s sole expense, of an ignition interlock device approved by the department.”