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 Viewsonic PRO8300, 3000 ANSI流明, DLP, 1080p (1920x1080), 4000:1, 762 - 7620 mm (30 - 300"), 0.9 - 10 m Viewsonic PRO8300. 投影仪亮度: 3000 ANSI流明, 投影技术: DLP, 投影仪最佳分辨率: 1080p (1920x1080). 光源使用寿命: 2500 小时, 光源使用寿命（经济模式）: 4000 小时. 焦点: 手动, 变焦比率: 1.5:1, 抛射比率: 1.4 - 2.1:1. 模拟信号系统: NTSC, PAL, SECAM, 支持图形分辨率: 720 x 576, 1280 x 720 (HD 720), 1920 x 1080 (HD 1080), 854 x 480 (WVGA), 支持的视频模式: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. USB 连接器形状: USB A型