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 戴尔 1850, 3000 ANSI流明, DLP, 1080p (1920x1080), 2000:1, 16:9, 849.9 - 7747 mm (33.5 - 305") 戴尔 1850. 投影仪亮度: 3000 ANSI流明, 投影技术: DLP, 投影仪最佳分辨率: 1080p (1920x1080). 光源类型: 灯泡, 光源使用寿命: 3500 小时, 光源使用寿命（经济模式）: 5000 小时. 焦距: 21.9 - 24 mm, 光圈范围: 2.5 - 2.67, 可调模式: 手动. 模拟信号系统: NTSC, NTSC 4.43, NTSC M, PAL, PAL 4.43, PAL B, PAL D, PAL G, PAL H, PAL I, PAL M, PAL N, SECAM..., 支持的视频模式: 480i, 480p, 576i, 576p, 720p, 1080p. HDMI 连接器类型: 全尺寸