Onset HOBO Weatherproof Sensors for Wind Speed and Wind Direction Recording 2 Sensor Set Measuring Wind Speed and Wind Direction Measurement Range of 0 to 100 mph (Wind Speed) and 0 to 355° (Wind Direction) >> Calculates Average Wind Speed, Highest 3-Second Wind Gust and Average Wind Direction >> Data Stored in Sensor & Automatically Communicates to Attached Data Logger (Sold Separately) >> Compatible with Indoor and Outdoor Environments with its Weatherproof Rating >> Wind Speed Sensor (#W-WSA-M003) and Wind Direction Sensor (#W-WDA-M003) Sold Separately >> Requires a Full Cross Arm (#M-CAA) to Support Both Wind Sensors Read More