... want to choose desktop, or vertical; 4, touch screen touch screen using infrared sensors; high-density infrared tubes, ... evenly; 10, the front shell can lock the touch screen, simple installation, easy maintenance; 11, quality ... .. Size: 17,19 inches 2. Type: infrared touch one machine 3. Transmittance: 92% 4. Against ... of bright light 5. working Life: a single touch can reach as much as 7 million times2T ...