NLC-OP2-LCD-076-4X20 Terminal Phoenix Contact NLC-OP2-LCD-076-4X20 Nanoline Operator Terminal is a user interface designed for Nanoline controllers. The NLC-OP2-LCD-076-4X20 features an 8-line, 20-character backlit display that provides operation and setup information to the user. Numeric (0-9) and directional (up, down, left, right) buttons allow entry and selection of data into the controller. The operator terminal provides access to view all I/O points, registers, flags, timers, counters, program flags, and system flags.