The Digital Repeater Compass indicates heading by using a large display. Heading can be read easily from different viewing angles up to a distance of ten metres. The decimal degree digit is smaller to prevent erroneous reading. Heading changes are indicated by a two color LED ring indicator. Two LEDs are illuminated at the same time. Depending on the rate-of-turn the LED ring rotates, towards starboard in green and towards port in red. The speed is proportional to the rate-of turn of the ship – a helpful indication. For use on double-end ferries a 180° offset can be added. Illumination is controlled via push-buttons or by an external dimmer. By using an external push-button the freeze-function can be activated. This feature allows to take bearings as the heading value is frozen for six seconds.