The Allen-Bradley 2711-B5A8L1 is a Panelview 550 HMI with a 5.5" monochrome LCD display, offering both keypad and touchscreen inputs. It supports DH+ and RS-232 connectivity, powered by 24 VDC. Equipped with 170 KB memory, making it ideal for industrial control applications, despite being a discontinued product. Brand Allen-Bradley Part Number/Catalog No. 2711-B5A8L1 Product Line Panelview 550 Display Size 5.5 in. Display Color Monochrome LCD Input Type Keypad and Touchscreen Communication DH+ and RS-232 Printer Port Input Power 24 VDC Pixels 256 x 128 Memory 170 KB application runtime Backlight 2711-NL1 Communication Cable 2711-NC13 Shipping Weight 6 lbs Shipping Dimensions 14x11x8 inches Series A,B,C,D,E,F,G,H Firmware 1.00-4.48 Product Lifecycle Status* Discontinued/Obsolete