1. Nationwide Interlock
2175 Stephenson Hwy, Troy, MI 48083
Coordinate: 42.55475,-83.12746
Phone: (248) 994-3000
2. Global Alarm, Inc.
1790 Livernois Rd Suite A, Troy, MI 48083
Coordinate: 42.54974,-83.14661
Phone: (248) 689-1600
3. Code Systems
525 Minnesota Dr, Troy, MI 48083
Coordinate: 42.53969,-83.09677
Phone: (248) 588-4868