UTC-510/515/520/532/542 User Manual 66C.1 Touchscreen OptionsTouchscreenType5-wire analog resistivetouchProjected capacitivetouchCorning® Gorilla® panelwith projected capacitivetouchMineralHardness 3H 7H 9HImpact Test 510g steel ball droppedfrom 50 cm - Pass130g iron ball droppedfrom 130 cm - Pass530g iron ball droppedfrom 130 cm - PassTouch Point Single touch Multi-touch Multi-touchAnti-Microbial No No YesVisible LightTransmission 80 ±5% 90 ± 2% 90 ± 2%