Docooler Digital Beaufort Wind Scale Anemometer Thermometer Measure wind speed and temperature. Large easy-to-read LCD display with backlight. Wind speed in Beaufort wind scale bar graph. Wind chill indication. Data hold function. High precision pressure sensor. Quick response, external thermistor. Auto/manual power off. Temperature display in C/F. Wind speed range: 0-30m/s.Wind temperature range: -10 - 45C(14-113F) Current/max/average wind speed reading. Wind speed unit: m/s, Km/h, ft/min, Knots, mph.