You may not be able to see the wind, but you can measure it with this detailed professional wind station. Its wind/thermo-hygro sensor measures the outdoor temp, humidity, and wind speed. And you can create 9 programmable alerts that notify you of certain conditions. Set an alert for high wind speed, indoor or outdoor low temperature, indoor or outdoor high temperature, indoor or outdoor low humidity, indoor or outdoor high humidity, and more. When the programmed alert value is reached, the weather station beeps 5 times each minute, until its out of alert range. Wireless wind sensor measures Wind Speed Range from 0-99 mph (0-159 kmh) with updates approx. every 30 seconds View the Wind Speed History for the past 60 minutes, past 24 hours, past 7-day period, past month, or past year View High/Low records for indoor or outdoor temperature and humidity with time and date stamp with simple one-button press Independent HI/LO alerts for indoor & outdoor temperature & humidity Displays Wireless Outdoor temperature/humidity trend with arrows (up for rising, down for falling, right for no change) Manual-set quartz time (hour/minute) with +/-1s/d time accuracy Create an outdoor alert for channel 1, 2, or 3 Displays "Feels Like" temperature and dew point Low battery icon for the THERMO-HYGRO sensor Set a frost warning when outdoor temperature is between 37 degreesF to 28 degreesF (3 degreesC to -2 degreesC) Set storm warning alert when barometric pressure drops 2.5 hPa in a 3-hour period (Note: Frost/Storm Warning values are not programmable. You can only activate/deactivate existing frost or storm warning) Low battery icon for WIND SPEED sensor Weather forecast icons include: Sunny, partly sunny, cloudy, rainy, thunderstorm and snowy Wind speed station uses (3) AAA Alkaline batteries (not included) TX141WV2 3-in-1 Wireless outdoor/wind/thermo-hygro sensor is powered by (2) C batteries (not included) Manufacturer's 1-year limited time warranty on manufacturi