Visual presentation equipment, namely-- visualizers, also known as document cameras, which consist of a video camera, arm lights, base light and viewing base, which are used to display objects, printed materials, slides and transparencies; LCD/DLP projectors for audio-visual display systems; electronic interactive whiteboards; wireless tablets; home theater LCD projectors; projection screens; plasma televisions and displays, rear projection televisions; CCTV security cameras; microphones; aud...