Sound Level Meter, Class 1 (and 1/3 octave band real-time analyzer)

* Simultaneous real-time octave band and 1/3 octave band frequency analysys.
* The top of the Rion range of sound level meters and analyzers for acoustical experts and specialists.
* Option: Building acoustic card (NX-28BA), FFT analysis card (NX-28FT) and Waveform recording card (NX-28WR).

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