CLASS 1 TYPE APPROVED.

Small enough to fit in a pencil case.

The SV 104IS is the intrinsically safe version of the revolutionary personal noise dosimeter, the SV 104. Both

SV 33 Class 1 Acoustic Calibrator produces an acoustic pressure of defined level 114 dB at frequency of 1 kHz.

The 3M™ Sound Examiner™ Sound Level Meter SE-401 IS is an intrinsically safe meter engineered to accurately measure noise levels in highly variable environments.

The SoundPro™ DL series provides advanced sound level monitoring and comprehensive data analysis.

On-site measurement of environmental noise is strongly expected to have high resolution and real-time analyzing