... OS 4.Multi Points:2/4/6/10/16/32 5.Factory,32-250 inch Multi Touch Screen --Basic Specifications Touch ... points,4 points,6 points,10 points,16 points,32 pointsOperating Voltage 5.0V(Internal voltage 3.3V)Average ... 7/8 ,Windows Vista , Windows XP,MAC OS,etcGeneral suitable LCD Size 19 – 250 inch, custom designHumidity Range Operating\Storage ... °C~85°C multi touch 60 inch infrared touch frame