Stoneridge makes sure your vehicle's electrical system can send power to all the places where it needs to go -- whether it's an automobile, medium- or heavy-duty truck, or agricultural/off-highway vehicle. The company's electronics unit makes electronic control units, instrumentation displays, and driver information and electrical distribution systems. Its control devices segment products monitor and measure specific functions of a vehicle, using switches, control actuation devices, and sensors. Stonebridge also has a PST segment that makes vehicle security alarms and tracking devices.