Most golf cars and other small task vehicles are ill equipped to provide users with important information about speed, range, distance, and more. The Ex-Ray is a digital speedometer with an external magnetic tooth sensor mounted to the wheel hub and a remote temperature sensor located on the DC motor.Speedometer with current, average, and max speed.Battery Voltage Readout for 12, 24, 36, and 48V electric cars or alternator battery health on gas cars.Programmable maintenance reminders.Ride time and total accumulated ride time.LED warning lights.Air and motor temperature displays.Non Resettable odometer.Lap timer and clock.High-intensity backlight.Auto On/Off.Waterproof connections.