... touch screen 4.Multi-Touch Infrared Touch screen.Infrared Touch Screen , IR touch screen panel ,IR add-on multi-touch screen ,Multi-Touch Infrared Touch ... and quick response to touch of any opaque object;Wide range of temperature;Transparency and high-resolution ... in various light conditions, indoor or outdoorDegree of protectionIP 68 standardInterfaceRS232, USB or optionalSensorInfrared raysOS ...