The FGr4S uses AFHDS 3 (Third Generation Automatic Frequency Hopping Digital System).
It uses a internal single antenna with two- way transmission capabilities and is designed to be compact and easy to install. It can output standard PPM,PWM 、i-BUS and S.BUS.
To ensure a strong signal make sure that the receiver is mounted with its antenna vertical.
CH 1 - CH 4: Connects the servos, power supply or other components.
i-BUS/S.BUS: Output i.BUS/S.BUS signal, connect sensor and expansion module. BIND: For bind cable