eBUS Button Panels - Flex55 and EU Wall Frames Versatile, easy-to-use button panels support Extron's globally-compatible Flex55 mounting system as well as the standard EU form factor. On this page: EBP EBP NewEBP 104 EU eBUS Button Panel with 4 Buttons - Flex55 and EU EBP 105 EU eBUS Button Panel with 5 Buttons - Flex55 and EU EBP 105P EU eBUS Button Panel with 5 Buttons - Flex55 and EU EBP 106 EU eBUS Button Panel with 6 Buttons - Flex55 and EU EBP 108 EU eBUS Button Panel with 8 Buttons - Flex55 and EU EBP 110 EU eBUS Button Panel with 10 Buttons - Flex55 and EU EBP VC1 EU eBUS Button Panel with Volume Control - Flex55 and EU EBP VC2 EU eBUS Button Panel with Dual Volume Control - Flex55 and EU