ViewSonic's industry leading projector, the Pro8520HD, is a Full HD 1080p model that delivers superior and stunning HD image quality onto 30~300” screen. With 5,000 lumens, the Pro8520HD ensures every pixel will stay crystal clear on the large venue even with the wide range of brightness settings. The Pro8520HD supports a Crestron RoomView® network management system that efficiently controls and manages all the projectors in the system from a central terminal. Through a RJ45 connection, the Pro8520HD can simultaneously display inputs from 4 different computer screens, provided all devices are connected to the same intranet. This facilitates the development of synergy among the participants. For a PC less presentation, it can also be operated by just plugging in an USB flash to enjoy the content immediately. With 1.5x optical zoom, it enlarges the screen image and fit in anywhere. The versatile interfaces, such as HDMI, RGB, S-video, component inputs and integrated speakers and microphone, allow the Pro8520HD to be used as an audiovisual stereo, making it the optimal solution for projection in large lecture rooms,conference rooms, and public demo rooms.