... touch solutions of human machine user interface, Such as: infrared(IR) Single-touch, Dual-touch and Multi touch Overlay, 4 Wire ... and multi-touch combinationOptical Touch Screen,Optical Touch Panel,Optical imaging CCD touch Panel IN Dual touch multi touch: Features:1 ... IP68 protection 32" Optical Touch Screen,Optical Touch Panel,Optical imaging CCD touch Panel Dual touch multi touch,Optical touch frame ...