Numerical Display: 4 Digital LCD Display and Backlight
Response Time: about 2 times/second
Operating Environment: -10℃~60℃ (14℉~140℉)
Power Requirements: One 9V battery 006p or IEC 6F22 or NEDA1604
Dimension: 280(L)x 89(W)x 50(H)mm
Weight: Approx.430g

Electricalspecifications
1.Temperature:
Range: -10℃~60℃, Resolution:0.1℃, Accuracy: 1.5℃

2.Relative Humidity：
Range: 20~80%RH, Resolution: 0.1%RH, Accuracy:3%RH@25℃

3.Sound level:
Range: -30 ~ 130dB(A), Resolution: 0.1dB, Accuracy: ±1.5dB
Range: -30 ~ 130dB(C), Resolution: 0.1dB, Accuracy: ±1.5dB
Test condition: 94dB 1kHz sine wave
Response frequency: 100 ~ 8000Hz

4.Illuminance (Lux)：
Range: 0~2000Lux , Resolution：1Lux
Range: X10(20000), Resolution：10Lux
Range: X100(50000), Resolution：100Lux
Accuracy: (5.0% of rdg + 10digits) at color temp
2850K calibrated to standard incandescent lamp at color temperature 2856K

5.wind speed:
Range: 0.5~20m/s, Resolution：0.1m/s, Accuracy: (3% of rdg+10digits)
Range: 1.8~72km/h, Resolution：0.1km/h, Accuracy: (3% of rdg+10digits)
Range: 1.6~65.7ft/s, Resolution：0.1ft/s, Accuracy: (3% of rdg+10digits)
Range: 0.9~38.9knots, Resolution：0.1knots, Accuracy: (3% of rdg+10digits)

6.Airflow:
Range: 0~999900CMM, Resolution: (3% of rdg+10digits), Accuracy: 0～999.9㎡
Range: 0~999900CFM, Resolution: (3% of rdg+10digits), Accuracy: 0～999.9f