Class 1 Sound & Vibration Level Meter (SV 977)

The SV 977D is a Class 1 Sound and Vibration meter designed for building acoustics, occupational noise and environmental noise measurements. The meter is a successor of SVAN 977A offering new 1/2” microphone MK255 offering wide frequency range from 3 Hz and excellent long-time stability of sensitivity.  The SV 977D has a built-in Bluetooth® interface for wireless connection with with smart-phone applications like Building Acoustics Assistant that extends measurement capabilities dedicated for building acoustics.