The IR Eye and Blaster Cables
The IR eye (the device connected to the receiver unit) and IR blaster (the device connected to the transmitter unit) use standard audio jacks and can therefore be extended with the use of compatible extender cables.
The IR Eye uses a 2.5mm stereo jack while the IR blaster uses a 3.5mm mono jack.
Extension cables can be purchased from numerous places and in many different lengths depending on your requirements. An example of suitable cables can be found on these links