Viewsonic LS901-4K data projector Standard throw projector 5500 ANSI lumens UHD 4K (3840x2160) White

Viewsonic LS901-4K. Projector brightness: 5500 ANSI lumens, Projector native resolution: UHD 4K (3840x2160), Contrast ratio (typical): 3000000:1. Service life of light source: 20000 h, Service life of light source (economic mode): 30000 h. Focal length range: 17.63 - 27.9 mm, Aperture range (F-F): 2.3 - 3, Vertical lens shift range: -21 - 0%. Serial interface type: RS-232. Noise level: 31 dB, Noise level (economic mode): 25 dB