The FS-i6X transmitter and FS-X6B receiver constitute a 2.4GHz AFHDS 2A digital proportional computerized RC system. This system offers superior protection against interference while maintaining lower power consumption and high reliable receiver sensitivity. It is specially developed for all radio control models. Features: Adopt AFHDS 2A (Automatic Frequency Hopping Digital System Second Generation) technology. Offering superior protection against interference while maintaining lower power consumption and high reliable receiver sensitivity. Receiving data from temperature, altitude and many other types of sensors, servo calibration and i-BUS Support. Multi-channel hopping frequency, hop between 16 channels (32 for Japanese and Korean version) to reduce interference from other transmitters. Unique ID recognition system, each transmitter and receiver has its own unique ID to prevent interference. Low power consumption, consuming as little as one tenth the power of a standard FM system, dramatically extending battery life. The FS-X6B supports 6 channel PWM output, standard PPM output and i-BUS support for up to 18 channels alongside a reliable voltage sensor interface. FS-X6B receiver fits for FS-i10, FS-i8, FS-i6, FS-i6s, FS-i6x, FS-i4, FS-i4x etc. FS series rc transmitter. FS-i6X Transmitter Specifications: Channels: 6-10 (default 6) Model type: Fixed-Wing/Glider/Helicopter/Quadcopter RF Range: 2.408-2.475GHz RF power: