Dell S520 Interactive - DLP projector - 3100 ANSI lumens - 1280 x 800 - widescreen - HD - WiDi / 802.11a/b/g/n wireless / Miracast Wi-Fi Display/LAN. Designed for outstanding performance in a variety of room conditions, the S520 is perfect for classrooms, conference rooms and even small offices. Make your projects, reports or lessons something special. Share your ideas and encourage collaboration with a complete interactive projection solution that combines the functionality of a whiteboard with the features of a multi-touch display.