Allen-Bradley 2711-K5A5 PanelView 550 HMI Display

The Allen‑Bradley 2711‑K5A5 PanelView 550 monochrome HMI is a 5.5‑inch keypad‑operated operator terminal with a blue‑mode monochrome LCD display, designed for PanelView Standard deployments and featuring RS‑232 DH‑485 communications for PLC integration. Running PanelBuilder32 software, it provides 170 KB of application runtime memory and 240 KB of nonvolatile RAM for objects and text, plus a 100,000‑hour LED backlight powered by the 2711‑NL1 module, with an active display area of 120 × 60 mm and a 256 × 128 pixel resolution. The unit is AC‑powered (85–264 VAC, 47–63 Hz) with a maximum power draw of 18 W, weighs roughly 6 lb (shipping), and carries an IP54/IP65 enclosure rating; firmware ranges from 1.00 to 4.48 and it is part of the PV550 family across multiple series (A–H).