Using V2.0 firmware or later on Tempest beltpacks. When the user initiates volume changes on the Beltpack, a visual indicator will appear on the display to reflect that change, the indicator is a numerical level that changes from "off" to a maximum audio level of -6dB.  The minimum level before off is reached is -30dB.  The level is stepped in 1dB increments.  If minimum / maximum volume limits are set in the beltpack menu then those levels will be reflected in the visual display.  These scales are also reflected in the beltpack on the mic gain, sidetone and stage announce menus.