40 inch Infrared Touch Overlay 20 Points IR Touch Frame with USB Interface Free-Drive Plug and Play If the touch is not accurate, you can calibrate it with infrared configuration software
1.open the infrared configuration software.(Double click InfraRedTouch)
2. Click “Equipment Calibration”
3. Place your finger in the center of the cue point until it prompts the next point
Calibration video below