Device for recording horizontal wind speed. Measuring range: 0.5 - 50 m/s, resolution: 0.1 m/s, starting value: 0.5 m/s, accuracy: +/-0.5 m/s or +/- 3% of measured value, measuring principle: cup star/opto-electronic, electrical output: 4 - 20 mA, load: max. 500 Ohm (for > 13 V DC operating voltage), operating voltage: 9 - 30 V DC or 24 V AC/DC, heating: 24 V DC/AC, max. 20 W, ambient temperature: -30 °C... +70 °C, including accessories for mounting on the traverse of the basic package, including 12 m cable (6 x 0.25 mm² LiYCY) for electrical connection to the junction box of the basic package, protection class: IP55.