-Class 2 Dual Level Calibrator
-Setting standard sound level at 94dB and 114dB.
-According Standard ANSI S1 4-1984 and IEC 942 1988 Class 2
-1/2 inch microphone adapters provided.
-Low battery indicator.
1.Output frequency: 1kHz +/- 4%
2.Test condition
* Environment Temperature
* Relative humidity: 65%
* Atmospheric pressure: 1013 mbar
3.Accuracy: +/- 0.5dB
4.IMENSION
* Size : Dia. 48 x 125mm
* Weight: About 285g(including battery)