This is the Wavtech LINKRC Remote Level Controller

Features:

• Remote Level Control
• Includes 5m (16.4 ft.) Flat RJ45 Cable
• Removable 2-piece Housing Design
• Custom Flush Mountable
• Break Away Mounting Tabs
• Dimensions (w/o knob & tabs): 1.1" x 1.5" x 1.8" (28mm x 38mm x 45mm)

Compatible Models:

• linkDQ
• linkQ
• bassFREQ
• link500.1mini
• link500.4mini
• link700.4plus
• link750.1plus
• link1000.1mini
• link1000.5plus
• link1500.1plus