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 LS620X, 3200 ANSI lumens, DLP, XGA (1024x768), 4:3, 60 - 150", 4:3, 16:10, 16:9 Viewsonic LS620X. Projector brightness: 3200 ANSI lumens, Projection technology: DLP, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 20000 h, Service life of light source (economic mode): 25000 h. Throw ratio: 0.61:1. Analog signal format system: NTSC, PAL, PAL 60, SECAM, Supported graphics resolutions: 640 x 480 (VGA), 800 x 600 (SVGA), 832 x 624, 1024 x 768 (XGA), 1152 x 864 (XGA+), 1152 x 870,..., Supported video modes: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Serial interface type: RS-232, HDMI connector type: Full-size https://www.projectorreviews.com/viewsonic/viewsonic-ls620x-short-throw-laser-projector-review/ The ViewSonic LS620X is a 3,200 lumen DLP projector with XGA (1024×768) resolution, intended for applications in business and education such as K-12 classrooms, retail settings and conference rooms. This projector has a short throw, with a throw ratio of... $1,216 list price, XGA (1024×768) Resolution – Ideal for replacing aging 4:3 Projectors, 20,000 Hour Laser Light Engine Lifespan, 100,000:1 Contrast Ratio Gives Decent Business-and-Education-type Black Levels, Beat its claim of 3,200 lumens at 3,222 lumen... Not compatible with USB Media, No Onboard File Browser or Media Player, No Smartphone Compatibility, Speakers are either Muted or Too Loud, there's no in-between, Louder volume settings become tinny, Fixed Focal Length – image size is entirely dependent u... The ViewSonic LS620X Short Throw XGA Laser ProjectorThe ViewSonic LS620X Short Throw XGA Laser ProjectorThe ViewSonic LS620X Short Throw XGA Laser ProjectorThe ViewSonic LS620X Short Throw XGA Laser ProjectorThe ViewSonic LS620X Short Throw XGA Laser Proj...