SeaStar DK4220 SmartStick Sensor Gauge Kit For real-time information at the helm, SeaStar Solutions offers a SmartStick position sensor and gauge option. A high-visibility position scale provides the driver with an at-a-glance visual position indicator. The SmartStick sensor is a non-contact linear position sensor, so there are no moving parts to wear out. All the electronics are integrated into the sensor body, making it fully waterproof. Features For use with SeaStar Jack Plates Provides prec