... s, km/h, fpm, mph, kts, Beaufort scale, °C, °F Resolution: 0.1 m/s, 1 fpm, 0 ... 5sec Operating temperature: -10~50°C, 14~122°F Special function: Auto power off; Data hold; MAX ... Beaufort, %RH, td(dew point temperature), °C, °F Resolution: 0.1 m/s, 1 fpm, 0.1%RH ... RH (5~95%RH)±1°C, ±1.8°F Special function: Auto power off; Data hold; MAX ... of reading + 60fps)±1°C, ±1.8°F±(3% of reading)m^3/s Special function: ...