Air Velocity Tester Dimensions L x W x H: 156 x 60 x 33 mm Humidity measurement range: 10...95 % Lux range: 0...20000 Lux Temperature range: -100 ... +1300 °C Wind speed range: 0.4...30.0 m/s Electrical supply: 1 x 6LR61 Instrument for: Humidity of Air / Lux / Temperature / Wind speed %rh resolution: 0.10 % No. of inputs: 4 Resolution, wind speed: 0.1 m/s