... %RH, -10~50°C, 14~122°F Accuracy:±(2% of reading + 0.3m/s)±(2% of reading + 60fpm)±3%RH (5~95%RH ... , Beaufort, °C, °F, m^3/s, m^3/h, CFM, m^2, ft^2 Resolution: 0.1 m/s, 1 fpm, 0.1°C ... .4~20 m/s, 0~99999m^3/s, -10~50°C, 14~122°F Accuracy:±(2% of reading + 0.3m/s)±(2% of reading + 60fps ... )±1°C, ±1.8°F±(3% of reading)m^3/s Special function: Auto power ...