MaxiMet Marine GMX260 Compact Weather Station with GPS. Measured Parameters: Relative Wind Speed, Wind Direction, 6-Axis Compass Heading, GPS Location, Heading and Speed. Compass allows compensations for tilt and provides pitch & roll data. Derived Parameters: Average Wind Speed & Direction, Corrected Direction, Gust Speed & Direction, True Wind Speed and Direction correcting for misalignment or motion, Height above Sea Level. Outputs: RS232, 422, 485 (ASCII), SDI-12, NMEA, Modbus. Power Supply: 5-30vDC (Consumption 37mA @ ...