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Specification: Condition: 100% Brand New Item Type: Environmental Meter Material: ABS Color: As shown in the picture Sound level Applicable standard: IEC61672-1 category 2 Accuracy: ±2.0db Display: 4 digits Resolution: 0.1db Frequency response: 31.5Hz〜8kHz Measurement range: Automatic: 35dB〜130dB Frequency weighting: db Microphone: 1/2 in condenser microphone Light Measurement range: 0 Lx〜200K Lx,0Fc〜20KFc Spectral response: CIE photography (CIE human eye response curve) Spectral accuracy: CIEVλfunctionf1’≦6% Cosine response: f2’≦2% Accuracy: ±4 ±0.5% fs of reading ( 10,000 Lx) Photoelectric detector: A silicon photodiode with a filter Wind speed Wind speed range: 0.5m /s〜30.0m / s Wind speed accuracy: ±(3%±0.3d) Measurement unit: m / s,km / h,ft / min,kts,Mph Temperature Measurement range: -40〜70℃(-40〜158℉) Accuracy: ±2.0℃,±3.6℉ Measurement unit: ℃/℉ Resolution: 0.1 Humidity Measurement range: 10〜95%RH Accuracy: ±5RH% Resolution: 0.1 Update 1times/s Maximum value: Maximum value Minimum value: Minimum value Data hold: Hold Auto power-off: The power is automatically turned off after about 2 minutes. Idle for 15 minutes Power supply: 1 x 9Vbattery,model:006P(Not included);NEDA1604 or IEC6F22 Battery life: About 30 hours Operating conditions: -20℃〜60℃,10%RH〜90%RH Storage conditions: -40℃〜60℃,10%RH〜75%RH Size: 252x66x33mm / 9.9x2.6x1.3in(L x W x H) Weight: 568g/20oz Package List: 1 x Sound Level Meter(1 x Illuminometer Probe, 1 x Temperature Humidity Probe, 1 x Anemometer Probe) 1 x English Manual 1 x Box