... (± 2°C)-10°C~45°C (± 2°C)Air velocity measuring range0.3~45m/s0.3~45m/sWind volume range0 ... °F√√Accuracy of temperature± 2°C± 2°CAccuracy of air velocity±3%±0.1 dgts±3%±0.1 dgtsAuto power off ... √√Air velocity unit m/s, Ft/min, Knots, Km/hr, ... Knots, Km/hr,MphBack light√√Max / min air velocity measuring√√Average and current air velocity measuring√√Resolution 0.1 m/ s 0.2 ...