This compact module is designed to remotely alter the volume of any low level signal source feeding any amplifier or mixer remotely, via RS 232 or RS 485 serial control. It will interface with the "Redback Touch" wallplate or any other 3rd party control system (including Crestron, AMX, RTI, Control 4, Savant etc). Includes one input with remote volume adjustment via serial control or volume adjustment via remote wallplate A 2280B. Requires 24V DC power supply.