Computer software, recorded; telecommunication machines and apparatus; video imaging systems; computer programs and software for image processing; measuring or testing machines and instruments; electric or magnetic meters and testers; electronic and optoelectronic evaluation apparatus for measurement data evaluation; measuring apparatus; monitoring apparatus, other than for medical purposes; signal generators; audio analyzers; image analyzers; electro-dynamic apparatus for the remote control of signals; digital signal processors; wave form monitors; digital video pattern analyzers; digital signal interface analyzers; synchronizing signal generators; video signal generators; change-over switches for telecommunication apparatus; transmitters of electronic signals; field tester; testing apparatus not for medical purposes; detectors; television field level meters; field strength meters; computer programs, downloadable; downloadable cloud computing software; downloadable software; AC adapters; batteries and cells; mutual conversion device between optical and electrical signals; parts and accessories for telecommunication machines and apparatus; electronic components; mounting racks adapted for telecommunications hardware; mounting racks for computer hardware; bags specially adapted for television field level meters; bags for measuring or testing machines and instruments; bags for electric or magnetic meters and testers; electrical adapters; battery packs; optical transceivers