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Sound Level Meter Calibrator ND9-A/ND9-B 


Standard: GB/T15173, ANSI S1.40 Class2, IEC942 
Output Sound Level: 94dB & 114dB 
Accuracy:  0.5dB (ND9-A); 0.3dB(ND9-B); 
Frequency: 1000Hz+2.4% 
Design For: 1", 1/2" 
Power Supply: 1X9V 6F22 Battery 
Dimension: 142X47X47mm 
Weight (not including battery): 275g
 
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