Touch screen monitor led monitor acoustic pulse recognition apr screen size 215 inches max resolution 1 920 x 1 080 pixel response time 5 ms aspect ratio 169 contrast ratio typical 1 0001 brightness 250 cdm widescreen dot pitch 0 248 mm viewing angle 170160 pixel density 10246 ppi horizontal frequency range 31 5 80 khz vertical frequency range 50 75 hz number of dvi inputs 1 number of vga inputs 1 monitor connection usb convenienc