Testo Vane Anemometer with built-in NTC air thermometer, incl protective cap, batteries and calibration protocol. Testo 1 measures air speed and temperature. It is ideal for quick spot checks at air outlets on account of its integrated measurement with the 40mm vane. Timed mean calculation is possible. In addition to air speed and temperature, testo 2 also measures air moisture. Testo's very own, patented humidity sensor guarantees accurate readings. In this way, air conditions can be reliably checked. Features: Flow velocity measuring instrument with temperature measurement Integrated measurement with 40 mm vane Timed mean value calculation Hold function and max./min. values Windchill calculation for outside areas (perceived temperature) Display illumination Protective cap for safe storage Including wrist strap, belt holder and calibration protocol Storage temperature - -20 to +70 °C Operating temperature - -10 to +50 °C Battery type - 2 batteries Type AAA Battery life - 100 h Weight - 110 g Dimensions - 133 x 46 x 25 mm Probe type - NTC Meas. range - -10 to +50 °C Accuracy - ±0.5 °C Resolution - 0.1 °C Probe type - Vane Meas. Range - 0.4 to 20 m/s Accuracy - ±(0.2 m/s + 2% of mv) Resolution - 0.1 m/s (Priced Per Each).