The FS-i6s transmitter and FS-iA6B receiver constitute a 10 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. Features: Low voltage alarm function Each transmitter and receiver has its unique ID 3inch touchscreen interface, more convenient to control Adopts 2.4GHz AFHDS 2A digital proportional computerized rc system Free software updates online allowing you to keep your system current Switchable control mode, comfortable to control the transmitter stick Specifications: Transmitter Brand: Flysky Model: FS-i6s Channel: 10CH Mode: Mode 1 to mode 4 switchable Model type: Airplane, multicopter and helicopter RF range: 2.4055-2.475Ghz Bandwidth: 500KHz Band: 140 RF power: Less than 20dBm 2.4G system: AFHDS 2A Code type: GFSK Sensitivity: 4096 Low voltage alarm: Yes (lower than 4.2V) PS2/USB port: Yes Power input: 4 * AA battery (not included) Size: 179 * 161 * 81mm Weight: 437g Receiver: Brand: Flysky Model: FS-iA6B Channel: 6CH Model type: Fixed-wing, multicopter and helicopter RF range: 2.4055-2.475GHz RF receiver sensitivity: -105dBm 2.4GHz system: AFHDS 2A Modulation type: GFSK Power: 4.0-6.5V DC i-BUS port: Yes Size: 47 * 27 * 15mm Weight: 20g NOTE: The transmitter and receiver have been pre-bound before delivey, If your are using another transmitter or reveiver, please bind the transmitter and receiver. Package Information: Package size: 27 * 22 * 11cm / 10.6 * 8.7 * 4.4in Package weight: 720g / 1.59lb Brand gift box package Package List: 1 * Flysky FS-i6s Transmitter 1 * Flysky FS-iA6B Receiver 1 * Upgrading Cable