1.Max Hold and Data Hold Function
2.Level Range:Low=30-100dB ,High=60-130dB
3.Accuracy :+1.5dB (ref 94dB @1kHz)
4.Frequency Range:31.5Hz to 8k Hz
5.Frequency Weighting: A,C
6.Time Weighting: Fast ,slow
7.Operation temperature:0 to 40°C(32 to 104oF)
8.Operation humidity:10 to 90%RH
9.Storage temperature: -10 to 60°C( 14 to 140 oF)
10.Storage humidity:10 to 75%RH
11.Auto power off