The EXFO America TK-1V2-PRO-S1 128G test kit (Millennium part #524876) bundles an FTBX-740C-based OTDR platform with EA and EUI-91 connector interfaces, DWDM/CWDM channel capability, and 128 GB of internal storage for extensive field test data logging. Built for technicians who need dual-wavelength OTDR testing alongside DWDM channel characterization, this kit supports demanding long-haul and metro fiber optic cable troubleshooting and acceptance testing. Its rugged, portable form factor is designed for daily use in outside plant environments, and compatibility with EXFO's broader FTB platform lets it share modules and accessories across a technician's test suite. This kit is a strong fit for carriers and contractors performing advanced OTDR-based network characterization.