Cameras; electrically driven tilt apparatus for video cameras; electronic viewers for use with cameras; graphic cameras; video cameras; video cameras combined with video recorders; video surveillance cameras; surveillance apparatus; video recorders; security apparatus for processing video and/or audio signals; security apparatus for receiving audio signals; security apparatus for receiving video signals; security apparatus for storing audio signals; security apparatus for storing video signals; security apparatus for transmitting audio signals; security apparatus for transmitting video signals