How long will I need the ignition interlock device on a DUI conviction?

It totally depends on your previous IID history as result of DUI/Physical Control convictions. If it is your first DUI, you will be required to have the Ignition Interlock Device (IID) for one (1) Year. If you have one prior IID, the time period will be five (5) years. If you have had the IID twice previously, it will be ten (10) years.