RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS DELL S520, 3100 ANSI lumens, WXGA (1280x800), 2200:1, 16:10, 1778 - 2540 mm (70 - 100"), 0.517 - 0.759 m DELL S520. Projector brightness: 3100 ANSI lumens, Projector native resolution: WXGA (1280x800), Contrast ratio (typical): 2200:1. Light source type: Lamp, Service life of light source: 3000 h, Service life of light source (economic mode): 4500 h. Throw ratio: 0.35:1, Offset: 125%. Analog signal format system: NTSC, NTSC 3.58, NTSC 4.43, PAL, PAL 60, PAL B, PAL D, PAL G, PAL H, PAL I, PAL M, PAL N, SECAM,..., Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232, USB connector type: Mini-USB B, USB Type-A, USB Type-B