The Allen-Bradley 2711P-K4M3D is a PanelView Plus 400 operator terminal. This operator terminal is powered by an external supply voltage range of 18-30VDC with nominal value of 24VDC. This operator terminal is part of the larger product family of the 2711P PanelView Plus operator terminals which are visualization components that supports installation near (local) or away (remote) from the process being controlled.

The 2711P-K4M3D may also be called as a Human Machine Interface (HMI). This is the general term used in the industry that may refer to any brand of HMI that performs real-time monitoring and control of process. Specifically, the 2711P-K4M3D provides process visualization via the 3.8-inch display Grayscale passive matrix, film compensated super-twist nematic (FSTN) screen which has a resolution of 320 x 240 and display area 77 x 58 mm (3.0 x 2.3 in.). It has a LED backlight with expected lifespan of CCFL 50,000 hours life, min. This backlight is not replaceable.

The 2711P-K4M3D permits operator input via the built-in array of buttons and key. Specifically, this operator terminal has Eight (8) fully-programmable function keys, numeric, navigation and confirmation buttons. The actuation rating of the keypad is up to 1 Million presses when pressed with an actuation force of 340 g.

The 2711P-K4M3D comes with One (1) Ethernet and One (1) RS232 communication ports. It also has One (1) USB port for insertion of external peripheral devices. This operator terminal has an application flash memory of 5Mb for series A and 10MB for series B or later hardware.

The 2711P-K4M3D terminal comes with a NEMA Type 12, 13, 4X, IP54, and IP65 enclosure rating. Featured on this terminal are a keypad input and a grayscale display, which is a monochrome passive matrix FSTN type that has a 32-level grayscale resolution of 320 x 240. Its screen measures 3.8 inches and has a total display area of 3.07 x 2.32 inches and is equipped with a backlight. The keypad of the 2711P-K4M3D terminal is made up of 8 poly-domed membrane keys that are labeled from F1 to F8 and can be operated with or without gloves. To configure this terminal, operators can only use the FactoryTalk View Machine Edition software that comes preinstalled. The available memory on the 2711P-K4M3D terminal is 64 MB, with 10 MB allotted for application storage, and its firmware version ranges from Version 3.20 to 5.10. This terminal also comes equipped with a battery-backed clock for timestamping data.