This illuminated USB switch accessory is connected via a USB cable and compatible with Harmony HMI range terminals. HMIZRA1 with click sensation is used as function keys with an HMI terminal where repetitive and reliable operations in dirty environments are required, while keeping the touch panel clean and protected. It is IP65 protected and has 5 switches with backlit LED. With Vijeo Desigher, the switches can be set to alarm display and acknowledgement mode or illuminated function keys mode. It is designed with wide view angle and brightness for easy visualization and quick acknowledgement of alarm. It offers water-resistance and can operate in harsh environments. The users can select and adjust the colors of the switch. It weighs 0.110Kg. It iis ideal for use in industrial applications like machine tool, packaging, printing, automotive, metal processing, food and beverage, and paper. It is compatible with Harmony Panel PC and Box PC, XBTGT, XBTGC, HMIGTO, HMIGXO, and HMISCU terminals. It is an Ideal complement to Harmony HMI series for direct access to functions without the need to touch the screen.