Two-piece Data Boosters, a Sender and Receiver pair, requires 4-wire Extender Cables between them.  The "Sender" should be mounted within 5 feet after a light or controller.  We run up to 200-FT of 4W Extender/Spacer Cable.  At the end of the cable run, install the "Receiver" within 5-FT of the next light.  Data Boosters work with both RGBW and RGB light chipsets. 3- or 4-pin needs specified.