2711-K5A8L1 by Allen Bradley is a Human Machine Interface. It is an operator terminal which comes with a screen size of 5.5 inches and a Monochrome LCD blue mode display. It has an input capacity of 24 Volts DC with an RS-232 (DH-485) Communication Port. Built-in keypad (F1 to F10) allow further user control to process. 2711-K5A8L1 has 170 KB of internal application runtime and a non-volatile memory of 240 KB. It is configured using the PanelBuilder32 software which can be installed in Microsoft Windows Operating Systems such as Windows 2000, XP and Vista Business. The operator terminal’s product dimensions are 167 x 266 x 106 mm (6.57 x 10.47 x 4.17 in.) and Installation depth of 86 mm (3.39 in). When installing, ensure that the selected panel has sufficient depth. Use in full-scale the cut-out template included in the terminal. Allow 2-inch space to all sides of the PanelView to allow adequate airflow and, wiring and add-on module insertion space. Mount the 2711-K5A8L1 in a NEMA Type 12/13 and 4X enclosure or equivalent panel. Ensure that the electronic circuitry is protected before commissioning the unit. The operator terminal has protective installation label which covers the top vents. Remove these covers once installation is completed and power is applied to the unit. Failure to remove the protective may prevent adequate air flow and cause overheating of the circuitry. The operator terminal’s shipping weight is 1.2 kg (2.7 lb). It has a power consumption of 18 W max (0.75 A at 24V DC).