sound level meter calibrator ND9

sound level meter calibrator ND9
 

Product description:

ND9
it is used to calibrate the sound level meters
The sound level meter calibraters has two models of ND9A, ND9B.
It fits for the standards of GB/ T15173, ANSIS1.40 CLASS2, IEC942. the frequency is 1000Hz.
The power supply is 1*9v 6f22 battery.
the dimension is 142*47*47mm.
The weight is 275g which not includes the battery.
The standard delivery includes:
main unit 1; carrying case type 1; instruction manual 1