... % Operational voltage 5V,12V DC Communication USB, Serial Transmittance 90%±2% Surface Finish Anti-glare/Non-glare Operating Temperature -30°C ... -DOS, Windows 95/98/2000, CE/ME/2000NT, OS/2,XP,Linux Touch Life 250 million touches in a single location Warranty ... ,LR,LR,LL ESD ± 27 KV Air, ± 8 KV ContactCapacitive Touch Screen Drawing Surface capacitive touchscreen lcd display pane 22''