The Wireless Receiver Box connects to the Main Control Box via a short length of CAT6 cable. This version uses a FlySky model # FS-R6B 6 Channel (2.4GHz) receiver. The RC receiver is connected to a ServoCity CAT6 Sending Board (non-boosted). The CAT6 cable connects to the Main Control Box’s ServoCity CAT6 Sending Board (boosted). I am using 3 of the 6 available channels. I am currently testing this configuration with a FlySky FS-T6 radio control system. My goal is to design a small handheld radio control system (transmitter).