Choose an Open HMI when your process needs more capabilities than a standard Graphic HMI can deliver. Open HMIs offer the software flexibility of a Windows operating system, and yet they are more affordable than a Windows-based Panel PC. Think of them as a midpoint between Panel PCs and Graphic HMIs. These versatile units come in two categories: the OMI5000 Series (widescreen with 16:9 aspect ratio) and the HMI600 Series (standard screen with 4:3 aspect ratio). Both series come with Windows CE.