The document describes the UniOP eTOP504 compact 4.3" widescreen HMI touchscreen display. It has a 480x272 pixel resolution display, dual 100Mb Ethernet ports, USB port, SD card slot, and optional plug-in modules. It runs the JMobile software which allows full vector graphics, object dynamics, multilanguage support, and communication with factory/building automation systems. It has an IP66 front panel rating and operates from 0-50°C. Optional accessories include disposable protective foils.