Maxell MCEW3551 3800-Lumen WXGA 3LCD Projector. It features 3800 lumens of color and white brightness to overcome ambient light in many situations, and its 1280 x 800 WXGA resolution will help keep images and text clear at most viewing distances.
Composite video, two HDMI, and two VGA inputs help ensure compatibility with a variety of source types. One VGA input can instead act as an output to daisy-chain multiple projectors or displays to show the same image source in multiple places. A built-in 16W speaker mitigates the need for an external sound system, though you can use one with the analog audio inputs and output. The projector is controllable via Ethernet, RS-232, or the included IR remote control.