Sound Level Meter Calibrator

Alat kalibrasi Sound Level Meter
To calibrate the sound level meter
Standard : GB/T 15173, ANSI S1.40 Class2, IEC 942
Output Sound Level : 94 dB, 114 dB
Accuracy : 0.5 dB
Frequency : 1,000 Hz
Design for : 1″ , ½”
Power Supply : 1 x 9V 6F22 Battery
Dimension : 142 x 47 x 47 mm
Weight : 275 gr