Product Details:

• Voltech AV7200
• Auto Volume Controller
• Designed for localized areas, adjusting speaker volume at 100V line level without sending control data back to the rack. 
• Enable handles up to 100W speaker load.
• Key features include automatic volume adjustment using an internal or external microphone, adjustable noise sensitivity, built-in override relay, and easy retrofitting with minimal rewiring.
• Ideal for existing installations includes shopping malls, stations, and lobbies.