About Wisconsin Interlock:

Wisconsin Ignition Interlock Devices Inc. is a State of Wisconsin full service IID provider.  Wisconsin IID installs and services the Draeger XT.  The Draeger XT, engineered  in Germany, is commonly considered the best device on the market.  Wisconsin IID is affiliated with the Wisconsin Better Business Bureau and holds an A- rating.  Click the BBB symbol on our site for more information.  Wisconsin IID is the largest IID service provider in the state.

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