Your benefits Easy, fast and precise measurement of flow, volume flow and temperature at air inlets and outlets Efficient regulation of balanced residential ventilation and fast documentation with the testo Smart App Fast in-app configuration, graph history, second screen and measurement data memory in the testo Smart App Timed and multi-point mean calculation Delivery Scope testo 417 - 100 mm vane anemometer with App connection Measuring funnel for plate outlets Measuring funnel for ventilation grilles Transport bag Calibration protocol 3 x AA batteries Temperature - NTC Measuring range 0 to +50 °C Accuracy ±0.5 °C Resolution 0.1 °C Velocity - Vane Measuring range 0.3 to 20 m/s Accuracy ±(0.1 m/s + 1.5 % of mv) Resolution 0.01 m/s Volume flow Measuring range 0 to +99999 m³/h 0 to +440 m³/h (testo 417 in combination with funnel set (0563 4170)) 0.1 to +200 m³/h , preferred 0,1 to 100 m³/h (testo 417 in combination with funnel & flow straightener (0554 4172)) Resolution 0.1 m³/h (0 to +100 ) 1 m³/h (Remaining Range) General technical data Weight 243 g Dimensions 236 x 108 x 45 mm Operating temperature -20 to +50 °C Product-/housing material ABS + PC / TPE Protection class IP10 Battery life 50 h Battery type 3x AA Storage temperature -20 to +50 °C