Expert answer:
Hello, FC-8800 series support 433M wireless communication converter and GPRS wireless communication converter. 433M wireless communication converter is cheaper,but the communication distance is shorter(regular communication distance within 500 meters ) and slower communication speed (slower than RS485). GPRS wireless communication converter is better than 433M wireless communication converter, but the price is a little high.
I recommend TCP/IP communication converter. It is the most popular communication way with a high speed, stable and remote control management.