Product Details:

• Voltech VC7100
• 100W 100V line auto trans volume controller from the VC7000 Series.
• Features an 86 x 86 mm British front face plate in white, UV-protected, with other colours available upon request. 
• Suitable for 4-wire cabling (100V audio and 24V DC override).
• Including a built-in overriding relay and LED indicator for emergencies, 5 preset attenuation levels, and a large cable terminal block.