The Siemens 6AV2123-2DB03-0AX0 SIMATIC HMI KTP400 Basic is a compact Basic Panel designed for operator control, machine visualization, and industrial automation applications.

It features a 4.3-inch TFT widescreen display with LED backlighting, 65,536 colors, and 480 × 272 pixel resolution, providing a clear graphical interface for displaying machine and process information. Operation is supported through an analog-resistive touchscreen together with four physical function keys.

The KTP400 Basic incorporates a PROFINET interface, allowing integration into compatible industrial automation networks and PLC-based control systems. Siemens specifies configuration from WinCC Basic V13 / STEP 7 Basic V13.

The panel operates from a nominal 24 V DC supply, with a permissible supply range of 19.2–28.8 V DC. Its typical active power consumption is approximately 3 W, making it suitable for compact industrial control-panel installations.

For the Nexon catalogue, the product belongs under Industrial Automation Panels → PLC Control Panels, consistent with the uploaded business profile's positioning of PLC panels with HMI and SCADA functionality.