The 4:1 Smart Jumper Block can ONLY be used with the Gen V Battery Rack Battery Rack - it is used to connect an existing PRO Lower Junction Box (PRO 2/CinemaHD/Cinelive) to the Gen V Battery Rack. It is NOT compatible with older PRO Battery Racks as the pin spacing is different.
A 4:1 Smart Jumper Block is included with every Gen V Battery Rack purchase, but this replacement Block is available to purchase as a backup if wanted.
