security observation systems comprised of CCD video camera, observation CCTV monitor and cable; image transfer systems comprised of mini-screen mirrors, lens, lamps, sound mixers, and filters; video security door phone systems comprised of 2-way audio communication flat miniature monitors, microphones, door release devices, and cameras; video cameras; B/W and color monitors; AC/DC VCR; wireless and wire systems comprised of cameras with wireless-audio/video transmitters, and monitors/TVs with...