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 PJD5254, 3300 ANSI流明, DLP, XGA (1024x768), 762 - 7620 mm (30 - 300"), 2.35:1, 4:3, 16:9, 22000:1 Viewsonic PJD5254. 投影仪亮度: 3300 ANSI流明, 投影技术: DLP, 投影仪最佳分辨率: XGA (1024x768). 光源类型: 灯泡, 光源使用寿命: 5000 小时, 光源使用寿命（经济模式）: 10000 小时. 数字变焦: 2 倍数, 光学变焦: 1.1 倍数, 抛射比率: 1.96 - 2.15:1. 模拟信号系统: NTSC, PAL, PAL 60, SECAM, 支持图形分辨率: 320 x 192, 640 x 480 (VGA), 720 x 480, 800 x 600 (SVGA), 1024 x 768 (XGA), 1152 x 864 (XGA+), 1152..., 支持的视频模式: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. 串口类型: RS-232, 高清晰度多媒体接口: 1.4a