The Allen-Bradley 2080-RDT2 is a remote LCD display designed as an accessory for the Micro800 family of programmable logic controllers (PLCs), specifically the Micro820 and Micro850. This compact and user-friendly module provides a simple Human Machine Interface (HMI) for monitoring and modifying controller data without needing a PC. It connects directly to the controller’s serial port, drawing power from the controller itself, which simplifies installation. The display features a 4-line LCD screen and an 8-button keypad, allowing operators to view status messages, check I/O, and adjust parameters on the fly, making it an ideal, cost-effective solution for small-scale machine control applications.