The FS-i6X transmitter and FS-iA6B receiver constitute a 6 channel 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. FS-iA6B receiver compatible with FS-i6X, FS-i4, FS-i6, FS-i10, FS-GT2E, FS-GT2G transmitter. FS-i6X Transmitter Specifications:Channels: 10chModel type: Fixed-Wing/Glider/HelicopterRF Range: 2. 408-2. 475GHzRF power: <20dBmRF Channel: 135Bandwidth: 500KHz2. 4GHz system: AFHDS 2A / AFHDSModulation type: GFSKStick resolution: 4096Low voltage warning: <4. 2VDSC Port: PS/2 PortChargeable: NoAntenna Length: 26mm (Dual Antenna)Weight: About 400gPower: 4 * AA battery (not included)Display: STN transflective display, LCD 128*64 lattice, VA 73*39mm, LCD with white backlightSize: 190 * 174 * 89mmOn-Line Update: YesColor: BlackCertificate: CE0678, FCC ID: N4ZFLYSKYI6XFS-iA6B Receiver Specifications:Channels: 6Model type: Airplane/Glider/HelicopterRF range: 2. 4055-2. 475GHzRF channel: 140RF receiver sensitivity: -105dBmBandwidth: 500KHz2. 4GHz system: AFHDS 2AModulation type: GFSKPower: 4. 0-6. 5V DCCompatible transmitter: FS-i6X, FS-i4, FS-i6, FS-i10, FS-GT2E, FS-GT2GAntenna length: 26mm (Dual Antenna)Weight: 16. 3gSize: 47 * 26. 2 * 15mmi-BUS port: YesData acquisition port: YesPackage information:Package size: 23. 2 * 20. 8 * 10. 5cm / 9. 13 * 8. 18 * 4. 13inPackage weight: 666g / 1. 47lbGift box packagePackage list:1 * FS-i6X Remote Controller1 * FS-iA6B Receiver1 * Bind Plug1 * Manual1*Upgrade Cable