This instrument of great stability and modern sensor technology measures air speed and ambient temperature. It is suitable in many areas of work, has easy controls and low energy use. Air speed measuring range 0.4 – 30 m/s with an accuracy of ±(3% +0.2 m/s), ambient temperature range 0°– 50°C with an accuracy of ±1.2°C. The instrument has an LCD display, auto power off after 5 min, working temperature 0 to 50°C, rel. humidity 5% – 95%, powered by a CR2032 battery. Instrument dimensions 148 × 53 × 22 mm.