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District Court Probation

Director: Michael Mahoney

Interlock Devices & Manufacturers


Each ignition interlock device model listed below is certified to be used in the state of Washington. Information about certification standards is available by writing to the Impaired Driving Unit, Washington State Patrol, 811 E. Roanoke, Seattle WA 98102.
To locate an ignition interlock installer in your area, call one of the ignition interlock manufacturers listed below.

Note: The Washington State Patrol does not endorse any manufacturers, dealers, or products. Their appearance on this page confirms only that the products have been certified by the Washington State Patrol and meet federal rules for breath alcohol ignition interlock devices.