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. 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