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The 2711-K5A9L1 is an Allen-Bradley operator terminal from the 550 series, which features a user-friendly LCD interface for seamless interaction with machines. It supports communication with PLC and SLC controllers via EtherNet, I/O networks, and serial communications, making it versatile for various industrial applications. Powered by 24-volt DC, it offers 170 KB of application runtime memory and is equipped with 10 function keys for intuitive user control. Designed for durability, this model operates between 0 to 55 degrees Celsius and can be stored at temperatures ranging from -20 to 70 degrees Celsius, withstanding relative humidity up to 95% non-condensing. Sharing multiple features with other 550 series terminals, it includes capabilities such as online printing and screen security, while supporting displays in monochrome, grayscale, and color.