Audiovisual (A/V) switchers, controllers, and routers for photographic and video equipment, namely, VGA switchers, distribution amplifiers, routing switchers, presentation routers and routing switcher controllers; photographic equipment, video equipment, and motorized camera positioning equipment, namely, pan and tilt motors, pan and tilt platforms, pan and tilt housings, TV cameras and TV monitors, and electronic controls therefor; electrical controllers, control systems consisting of electr...