Sound Level Meter (Class 1) with Low-Frequency sound (from 1 to 20 000 Hz) measurement.

* large color LCD screen (3-inch)
* No paper manual is needed (Help function)
* Water-resistant (IP54; except for the microphone)
* Use of rechargeable batteries (or dry alkaline batteries)
* Supports long-term measurements (up to about 1 month)
* Option: Octave, 1/3 octave real-time analysis program (NX-62RT), FFT analysis program (NX-42FT) and Data management software (AS-60/AS-60RT).