Sensor Cup anemometer with reed contact Output signal square: Low = 4.5 V Calibration factor 5.22 Hz = 1 km/h 18.79 Hz = 1 m/s From software version Fronius Sensor Card/Box 1.1.0.28: 1.45 Hz = 1km/h 5.22 Hz = 1m/s Threshold value 2.5 m/s Wind speed resolution 1 m/s, 1 km/h Tolerance +/-5% from 5 m/s Protection class IP 54 Permissible ambient temperature -20 degrees Celsius - +60 degrees Celsius Dimensions (height) 93.0 mm Dimensions (width) 115.0 mm Dimensions (length) 85.0 mm Connection cable 2 m CU cable, free ends, wire end ferrules, UV-resistant Max. cable length (distance: sensor card/box to sensor) 30 m