VU Meters have a valid range from 0 to 1, but you can set the value to be interpreted in either linear or logarithmic fashion.

Java Class Name:  VoltageVUMeter

Notable APIs:

void SetLinearMode( boolean linMode );
Set this to true for the meter to operate in linear mode, false for it to behave logarithmically.

void SetValue( double newValue );
Sets the meter’s value, valid range is from 0 to 1.

double GetValue();
Retrieves the meter’s current value.

Save/Restore State:  Voltage Modular doesn’t save state for VU meters.