DELL 4220, 4100 ANSI lumens, DLP, XGA (1024x768), 2000:1, 4:3, 782,3 - 7797,8 mm (30.8 - 307") DELL 4220. Projector brightness: 4100 ANSI lumens, Projection technology: DLP, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 2000 h, Service life of light source (economic mode): 2500 h. Focal length range: 18.2 - 21.8 mm, Aperture range (F-F): 2,4 - 2,66, Throw ratio: 1.6 - 1.92:1. Analog signal format system: NTSC, NTSC 4.43, NTSC J, NTSC M, PAL, PAL 60, PAL B, PAL D, PAL G, PAL H, PAL I, PAL M, PAL N, PAL..., Supported video modes: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Serial interface type: RS-232