The Model 1820 takes years of classroom use and yet it's stylish enough for any executive boardroom. A strong 2 700-lumen light output delivers bright presentations in various lighting conditions and a wide-angle singlet lens projects large clear images in the smallest rooms. The closed-head design protects the lens from dust and smudges. A lamp ejector makes replacing lamps simple and a thermal-protection circuit prevents the unit from overheating. Features also include accessible power switch that puts the controls where they count at fingertip reach fold-down post and handy power-cord wrap.