Promethean PRM-45 Projector - WXGA Conference Room Projector. The Promethean PRM-45 Projector is a short-throw projector used for ActivBoard systems series like adjustable, fixed, mount and mobile systems. It contributes in giving the true collaborative teaching and learning experience for teachers and students, creating a more active, inspired and engaged classrooms. This projector uses DLP technology, has a short throw ratio of 0.52, projection distance of 0.54m ~ 1.22m (21.3in ~ 48in) and WXGA native resolution. Its lamp life is about 4000 hours (normal) and 6000 (eco). - Short-throw projector; - Used for ActivBoard series; - DLP technology; - WXGA native resolution (1280 x 800); - 2100:1 contrast ratio; - 3150 ANSI Lumens; - Throw ratio: 0.52; - Audio input/output; - Digital zoom; - PC and Mac compatible;