All your A / V devices remotely control with the cabinet doors closed: you do that with the Marmitek IR Control 10. You stick the supplied infrared cables to the IR receiving points of your device and insert them into the hub. Then you place the infrared receiver in view, for example under your TV. This way the cabinet doors can remain closed while you operate your equipment with the remote controls. You connect up to 4 LED cables with 2 LED emitters each to the device.