Integrating measurement by means of 40 mm vane. Timed mean calculation. Hold function and max./min. values Windchill calculation for outside areas. Flow: - Measuring range: 0.4...20 m/s - Resolution: 0.1 m/s - Accuracy: ± (0.2 m/s 2 % v. m.v.) - Units: m/s, km/h, fpm, mph, knots, - Wind chill°C/°F, Beaufort Temperature: - Measuring range: -10...50°C - Resolution: 0.1 °C - Accuracy: ± 0.5 °C - Units: °C/°F Humidity (only testo 410-2): - Measuring range: 0...100 % rH - Resolution: 0.1 % rH - Accuracy: ± 2.5 % rH (5...95 % rH) - Units: % rH, wet bulb, dew point - Operating temperature: -10...50°C - Battery type: Alkaline (2 x AAA)
Lifetime: - 410-1: 100 h - 410-2: 60 h - (typ. without display illumination) - Dimensions (incl. protection cover): 133 x 46 x 25 mm Delivery package: testo 410-1 or 410-2, calibration protocol, hand strap, pouch, protection cover, batteries.