9 Electric and electronic surveillance installations, comprising; video cameras; dome cameras; camera lenses [ and lens accessories, namely, adapter rings, macro rings, view finder telescopes, focus extensions and connection plugs; ] video monitors; video recorders; [ video printers; ] protective housings for video cameras; electric control, switching, [ operation, remote control and distribution ] systems for surveillance equipment comprising; amplifiers; electric installation material, namely, cables, plugs, switchers, transmission lines; [ electrical measuring instruments for installing video-systems; Pre-recorded and blank computer-readable storage media, namely, magnetic disks and tapes, video tapes, disks, television storage disks and semiconductor storage modules and blank computer readable storage media, namely, magnetic disks and tapes, video tapes, disks, television storage disks and semiconductor storage modules; ] mechanically driven pan/tilt-heads for video cameras with mounting devices thereto attached for cameras and monitors