High Accuracy 5 In 1 Multifunction Environment Meter

high accuracy 5 in 1 Multifunction Environment Meter features:1. 5 in 1 for Light meter, Sound level meter, Humidity meter, Temperature meter and Anemometer2. Large backlit LCD display3. Data Hold and Max Hold4. Overrange indication5. Low battery indicationhigh accuracy 5 in 1 Multifunction Environment Meter specifications:Sound LevelApplied standardIEC61672-1 CLASS2Accuracy±2.0dBDisplay4digts Resolution0.1dBFrequency response31.5Hz~8kHzMeasurement rangeAuto:35dB~130dBFrequency weightingdBAMicrophone1/2 inch Electric condenser microphoneLightMeasuring range0 Lux~200K Lux, 0Fc~20KFcSpectral responseCIE photopic(CIE human eye response curve) Spectral accuracyCIE Vλfunction f1’<=6%Cosine response f2’<=2%Accuracy±4% rdg±0.5%f.s.(<10,000Lux)±5% rdg±10dgts.(>10,000Lux)Photo detectorOne silicon photo diode with filterAir velocityAir velocity range0.5m/s~30.0m/sAir velocity accuracy±(3%±0.3d)Measurement unitsm/s, km/h, ft/min, knots, Mph,TemperatureMeasurement range -40~70°C(-40~158°F)Accuracy±2.0°C,±3.6°FMeasurement units°C /°FResolution0.1HumidityMeasurement range 10~95%RHAccuracy±5RH%Resolution0.1Data update1 time/secMaximum valueMAXMinimum valueMINData HoldHOLDAuto power offAutomatically power off after approx. 15 minutes of inactivity Power supplyone 9V battery with type of 006P,NEDA1604 or IEC6F22 Battery lifeAbout 30 hoursOperating condition-20°C~60°C,10%RH~90%RHStorage condition-40°C~60°C,10%RH~75%RHDimensions 252 (L) *66 (W) *33(H) mmWeight568ghigh accuracy 5 in 1 Multifunction Environment Meter pictures:Recommendations:Professional Light Meter DigitalNew Model Professional Noise Meterwind speed meter anemometer ET-955