The Audac VC3022 100v Volume Controller 20w 80 X 80 mm can be adjusted in 11 steps of 3 dB. It features a slim and good looking design and are constructed out of sturdy ABS, making it suitable for big projects in industrial environments as well as standard home interiors.
An integrated 24 Volt relay allows bypassing of the volume controller in priority situations, making sure the message is always clearly heard at maximum volume. Connections are made using screw terminal blocks, and flush and surface mount boxes (WB3102) are separately available.