Choosing OT815 with our interactive projector such as AN-STi series, you can direct touch the projection screen with your finger without using IR pen. It is easier and more convenient for you to use interactive function.
Installing Optical curtain upgrades to Finger touch function.
By installing optical curtain (optional part) on the top of the screen user can use finger to touch the interactive screen through USB signal connection without IR pen.
Easy to set up.
Press the setting button first.
When Red LED light turns on, you can adjust the Curtain light to the proper position within 2 min.