The RC2002A-TIG-ESX is an LCD module manufactured by Raystar. It features a 20x2/2x20 alphanumeric FSTN Negative green LED display, making it suitable for applications requiring a vivid display. The module also has a built-in microcontroller, 2K SRAM, 3 banks of 5V I/O, and a convenient serial communication interface. It is designed to support a variety of operating systems, including ATmega, Cortex, 8051, and Zilog series MCUs. The module also features a temperature-controlled backlight intensity and is extremely cost-effective.