THOR 550 Autopilot
The THOR-550 control unit is one of the Radio Zeeland autopilots. Together with the P-503 junction box, the THOR-100 rudder position indicator and an optional THOR-300 Rate of Turn indicator the THOR-550 is a complete autopilot. This system has the unique possibility of being connected to every approved Rate of Turn indicator via the P-503 junction box and the P-100 sensor, as the rudder position is indicated on the LED display of the THOR-550.