Moisture MeterFeatures- Measures: Sound Level, Light, Air Velocity, Temperature and Humidity- Auto range for sound with A frequency weightings- Cosine corrected silicon diode sensor for lux levels- 70mm vane for airflow- Semiconductor sensors in the probe for humidity and ambient temperature measurements- Selectable units °C/°F- 55mm LCD display with backlight and function indicators- Data hold function freezes displayed value- Max hold display highest measured valued- Max memory display highest measured value since power on- Auto power off- Low battery indicationSound LevelApplied standard IEC61672-1 CLASS2Accuracy ±2.0dBDisplay 4digtsResolution 0.1dBFrequency response 31.5Hz to 8kHzMeasurement range Auto: 35dB to 130dBFrequency weighting dBAMicrophone 1/2 inch Electric condenser microphoneLightMeasuring range 0 Lux to 200K Lux, 0Fc to 20KFcSpectral response CIE photopic (CIE human eye response curve)Spectral accuracy CIE Vλfunction f1’≤6% Cosine response f2’≤2%Accuracy ±4% rdg±0.5%f.s.(<10,000Lux); ±5% rdg±10dgts.(>10,000Lux)Photo detector One silicon photo diode with filterAir velocityAir velocity range 0.5m/s to 30.0m/sAir velocity accuracy ± (3%±0.3d)Measurement units m/s, km/h, ft/min, knots, mphTemperatureMeasurement range -40 to 70°CAccuracy ±2.0°CMeasurement units °C/°FResolution 0.1HumidityMeasurement range 10 to 95%RHAccuracy ±5RH%Resolution 0.1Product Dimensions (mm): 252 x 66 x 33Package Dimensions (mm): 0 x 0 x 0