57" IR Touch Screen Open Frame Touch Accuracy:1.5mm USB Port/RS232, Plug Play, No Drive Long Life Time, No Touch Limit 57" IR Touch Screen AMH-T57 is designed ... , Commercial, Education, Presentation, Seminar, Home Entertainment, & Recreation, etc. AMH offers various sizes IR touch Screen from 19", 22", 26:, 32", 37", 42", 47", 50 ...