The newest receiver from Sanwa has a very distinctive feature in that the antenna of the RX-481 receiver is already integrated into the housing – no more antenna cable that has to be fixed on the chassis and therefore the antenna cable can’t be broken or disconnected anymore when it comes to a crash. The integration of the antenna into the housing doesn’t have any negative influence on the range and interference-free transmission. The RX-481 receiver has four channels and can be operated in FH-3 or FH-4 mode so is compatible with popular Sanwa transmitters like the M12, MT-4 and MT-4S.
107A41253A Sanwa RX-481 Receiver
Source: LRP