Use these additional IR emitter LEDs on the Invisible Control 2 to operate 4 devices instead of 2. Use the IR Eye 2 if you want to use the wireless Powermid XL but cannot place the set's IR transmitter directly in front of your equipment. Connect one IR Eye 2 to the set’s IR transmitter and stick the 2 IR emitter LEDs on the devices you want to operate (max. 2 devices).