The Sony PVM-20M2MDU is designed specifically for medical applications, the M2MD Series Monitors provide the exceptional clarity and color fidelity required for endoscopy, ultrasound, surgical and laboratory microscopy. The Sony PVM-20M2MDU medical monitor is UL-2601-1 listed, and offer an HR (High Resolution) Trinitron® picture tube, in addition to compatibility with NTSC and PAL color systems. The Sony PVM-20M2MDU design incorporates knob controls, splash guards and on-screen menus, provides flexibility and easier access to monitor setup. The Sony PVM-20M2MDU has been replaced by the Sony PVM-20L2MD. Limited refurbished units available.