Instant Fault Detection Quickly diagnose monitor issues (LCD, CRT, HDTV, projectors) Determines if problems are from the PC or the display hardware in seconds 4K Resolution Testing Supports 4 standard resolutions (640x480 to 1280x1024 @60Hz) Generates 10 test patterns (color bars, grids, flashing signals) Compatibility Works with VGA, SVGA, XGA devices via a 15pin Dsub connector Essential for shops and recyclers Compact and Portable Pocketsized at 90 mm Powered by 9V battery or USB (adapter not included) Weighs only 120 g Use scenarios In a , quickly identify whether image problems come from the PC or the monitor, reducing troubleshooting time. For field technicians, verify multiple displays onsite using standard resolutions and test patterns. In refurbishing or recycling operations, efficiently test inventory compatibility with VGA/SVGA/XGA displays before resale.