ViewSonic PA503S is released by ViewSonic that is designated for business presentation. With 3600 lumens, ViewSonic PA503S offers you a bright image output with all the graphics and texts. Its resolution is FHD 1080p and dynamic contrast ratio is up to 22000:1. Moreover, it provides users with multiple connection options including HDMI, VGA, composite RCA, Mini USB Type B, RS232, and audio-in.