... Temperature and Air Velocity up to 20m/s anemometer temperature humidity. VA8020 Temperature/Vane anemometer Measure: m/s, km/h, fpm, mph, kts ... Dimension:157 x 60 x 30mm Weight: 180gVA8021 Temperature/Humidity/Vane anemometer Measure: m/s, km/h, fpm, mph, kts, Beaufort, %RH ... :157 x 60 x 30mm Weight: 180gVA8022 Temperature/Air volume/Vane anemometer Measure: m/s, km/h, fpm, mph, kts, Beaufort, °C ...