The Rocktron All Access MIDI Foot Controller is a stand-alone foot controller that can be completely customized for your music gear requirements. It can be set up to your specs in three operating modes: Bank Mode, Song Mode and Remote Mode. The MIDI controller's Bank Mode has 120 presets and each instant switch can be set up global or per preset. Customize set-up as either 24 banks of 5 presets with 10 "instant" switches (effect on/off); or 12 banks of 10 presets with 5 instant switches (effect on/off); or 8 banks of 15 presets with no instant switches set up. All 15 access switches can also be set up to "instant", operating as a huge instant access "pedal board". Song Mode allows up to 150 songs to be stored with 15 presets per song. The 10 sets allow placement of 50 songs per set. Remote mode automatically programs the footswitch to match Rocktron remote-compatible units. Titles and individual switch functions will automatically program and continuously update themselves on both the rack unit and the All Access foot controller. Functions like tap delay, mute, boost and effects on/off instantly appear when connected to a Rocktron remote jack without any programming.

Billy has been seen using this midi controller throughout the years, but prominently during the Arising Tour, and most recently the Oceania tour. You can see it in his Rig Rundown video from Premier Guitar.
[Rig Rundown video]