Infrared receiver to teach the touchscreen infrared codes. This module is connected to the back of a touchscreen and the codes of a particular remote are then taught one by one. These codes can then be used to control third-party devices via an audio interface, such as a set-top box, DVD player, etc.
You do not need this module when using the LED touchscreens. For the LED touchscreens you can use the bindingsoftware to choose the IR codes.