The Launch Heavy Duty Truck Add-On Module is perfect for a shop that works on both heavy-duty (Class 4 through 8) and medium-duty trucks. This add-on Module turns existing Launch Pad IIs, into full function Heavy Duty Truck Scan Tools. The unit communicates via Bluetooth or it can be hardwired to a vehicle with 12 volt or 24 volt systems. It supports the following special functions, Component Replacement, Cylinder Compression Tests, Injector Cut Out Tests and DPF Regeneration. The add-on module works on various systems, including Engine, Transmissions, ABS, and Auxiliary from manufacturers such as Wabco, Bendex, and Allison. The tool can be used on vehicles including, Cummins, Detroit, Freightliner, Fuso, Hino, International, Isuzu, KW, Peterbilt, Sterling, and Volvo.