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preview-limited)","basis":"rated","mode":null,"conditions":null,"sources":[{"url":"https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf","title":"ViewSonic LSD500-4K | LS740-4K Projector User Guide (VS21224)","kind":"manual","quote":"286 mm x 129 mm x 216 mm"}]},{"key":"power.psu","label":"Power supply","value":"external_brick","unit":null,"standard":"Vendor","basis":"rated","mode":null,"conditions":null,"sources":[{"url":"https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf","title":"ViewSonic LSD500-4K | LS740-4K Projector User Guide (VS21224)","kind":"manual","quote":"Connect the power adapter to the DC IN jack at the rear of the projector."}]},{"key":"power.rated_frequency_hz","label":"Rated frequency","value":[50,60],"unit":"Hz","standard":"ISO/IEC 21118 items 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| LS740-4K Projector User Guide (VS21224)","kind":"manual","quote":"Additional warning against eye exposure for close exposures less than 1 m (3.28 ft)."}]},{"key":"safety.iec62471_5_risk_group","label":"Photobiological risk group","value":"RG2","unit":null,"standard":"IEC 62471-5:2015 (image projectors)","basis":"rated","mode":null,"conditions":null,"sources":[{"url":"https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf","title":"ViewSonic LSD500-4K | LS740-4K Projector User Guide (VS21224)","kind":"manual","quote":"do not stare into the beam, RG2 IEC 62471-5:2015."}]},{"key":"safety.laser_class","label":"Laser product class","value":"Class 1","unit":null,"standard":"IEC 60825-1:2014 (Ed. 3)","basis":"rated","mode":null,"conditions":null,"sources":[{"url":"https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf","title":"ViewSonic LSD500-4K | LS740-4K 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