The Aluwind HR is a measuring instrument for wind speed and direction. It is connected to the TOPLINE bus of your installation. Equipped with high quality ball bearings and mechanical elements of precision, the Aluwind HR guaranteed qualities of a reliable, precise and sensitive sensor. The TOPLINE bus cable is not provided with the masthead unit. Specifications Power supply 10 to 16V DC Consumption 25 mA Sensitivity of the anemometer < 2 knots Waterproofing IP67 Wind speed measurement range laboratory tested from 0 to 60 knots Wind vane angular resolution 0,1° Air temperature measurement -10°C À +50°C Weight 600g Operating temperature -10°C À +50°C Storage temperature -20°C À +60°C Features This sensor gives access to: true wind speed and angle in knots or meters/second if coupled with the speedometer log, air temperature in degrees Celsius or Fahrenheit, the calculation of the VMG (Velocity Made Good)