... may want to choose desktop, or vertical; 4, touch screen touch screen using infrared sensors; high-density infrared tubes, light ... according to KTV professional integrated design, with vents, heat evenly; 10, the front shell can lock the touch screen, simple installation, ... and price.. Size: 17,19 inches 2. Type: infrared touch one machine 3. Transmittance: 92% 4. Against light resistance: resistance ...