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 lumens, DLP, 1080p (1920x1080), 2000:1, 16:9, 849.9 - 7747 mm (33.5 - 305") 戴尔 1850. 投影機亮度: 3000 ANSI lumens, 投影技術: DLP, 投影機原始解析度: 1080p (1920x1080). 光源類型: 燈, 光源使用壽命: 3500 小時, 光源使用壽命（經濟模式）: 5000 小時. 焦距範圍: 21.9 - 24 mm, 光圈範圍(F-F): 2.5 - 2.67, 變焦類型: 手動的. 類比信號格式系統: 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..., 支援影像模式: 480i, 480p, 576i, 576p, 720p, 1080p. HDMI 連接頭類型: 全尺寸