Android application package whose name translates roughly to EmotnUI desktop, a launcher or home screen interface, roughly 10 MB in size. Nothing in the name identifies a specific device, firmware version or hardware it targets. APK files install on Android devices such as TV boxes, projectors or tablets, either through a file manager or with adb install. Before loading it onto a customer unit, confirm it is intended for that hardware and Android version, since a mismatched launcher can leave the device without a usable home screen.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @tv_software. Enginerys does not host this file.