La Crosse Technology TX-23U Wind Sensor for La Crosse 915 MHz Weather Stations Connects to TX22U-IT Thermo-Hygro Sensor with 32ft wired cord Reads wind every 4.5 seconds Works with La Crosse WS-1516-IT and WS1913 Installs up to 330 feet away from the main console Transmits wind speed and wind direction Works in winds between 0 to 111.8 mph (0 to 207 km/h), and wind chills down to -39.8 F Powered by Thermo-Hydro sensor (TX22U-IT)