Built-in Wifi enables the client to operate the demonstration on the screen by multiplepeople at the same time, convenient for the discussion and communication of meetings.screen Demonstration by scanning QR Code by Single screen Projection. one-click remote file transfer, no need for data line or U disk, save time. Writing, marking , finger erasing, many tools in whiteboard toolbar,background color, brush color, brush strokes,many kinds can be replaced. Restore every pixel for you, enjoy intelligently, blossom big screen, and make life brilliant.Bigger vision, bring better immersion experience. Superb anti-glare technology is used toensure clear display of screen content in bright environment Don’t miss any details. lndustrial grade aluminium alloy,after wire drawing treatment, durable,rust-proof and antistatic!  The body is made of black cold rolled steel,which has good anti-rust and anti-static effectand good heat dissipation performance. OPS industrial computer, low power consumption motherboard,low heat volumn. Support long-term uninterrupted operation.  Multiple Sizes Selection, It can be selected according to the sizes of the conference rooms to meet your different needs.The following sizes are the display sizes.