Link utile per confrontare le letture dei due anemometri
WS 80 a ultrasuoni e WS65 a palette

HP3501 ( WH65): Personal Weather Station Dashboard | Weather Underground
WS80: Personal Weather Station Dashboard | Weather Underground

HP3501: Ecowitt Weather
WS80: Ecowitt Weather
qui il link del sito polacco con l'utile discussione
Czujnik Ecowitt WS80 z ultradźwiękowym wiatromierzem / stacja HP2553