Optoma ZK551. Projector brightness: 5100 ANSI lumens. Projection technology: DLP. Projector native resolution: UHD 4K (3840x2160). Light source type: Laser. Service life of light source: 30000 h. Focus: Manual. Focal length range: 20.91 - 32.62 mm. Aperture range (F-F): 2.5 - 3.26. Serial interface type: RS-232. HDMI connector type: Full-size. Noise level: 30 dB. Projection modes: Ceiling. Front. Rear. On Screen Display (OSD) languages: Arabic. Czech. Danish. Dutch. English. Farsi. Finnish. French. Greek. Hungarian. Indonesian....
