T8FB 8 Channels RC Transmitter and Receiver Support BT Connect to App for Setting, 2.4Ghz Remote Controller Works for Racing Drone, Aircraft, Airplane, Multicopter, Quad, Car, Boat and More. Mobile Phone App System Support: Android /IOS. IOS: Go to App Store search "Radiolink" to download app. Features: Excellent Anti-interference: Real pseudo random algorithm FHSS communication technology makes T8FB with stable signal, control range up to 1.3 mile (2KM). Lower Latency: TI CC2500 chip, 4096 0.5us per section, fast response for all 8 channels. Wireless Connection: Wireless connect controller with app to parameter setting, like Fail-safe, End Point Adjustment, Dual Rate, Programmable Mix Control etc. Suit for Multiple Models: Press 1 second to bind with receiver R8EF, R8F, R8FM, R8SM, fit a wide range of RC aircraft models: FPV racing drone, quadcopter, multirotors, RC boat and car. Anti-polarity Protection: Not damage even if you insert wrong polarity. Universal JST connector supports multiple batteries: 4 pcs AA or 2s-4s LiPo battery. (Not included batteries). If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specifications: T8FB BT version Transmitter Channels: 8CH Frequency: 2.4GHz ISM band(2400MHz~2483.5MHz) Channel Bands Width: 1200KHz Spread Spectrum: FHSS Adjacent Channel Rejection: >38dbm Transmitter Power: <100mW (20dBM Operating Voltage: 4.8V~18V Sensitivity: -104dB Speed Rate: 38kbps PWM Output: 1.0ms~2.0m Size: 17.3*10.2*20.6cm R8EF Receiver: Signal Output: S-BUS & PPM & PWM Channel: 8CH Control Distance: 2000m in Air, Actually Control Distance Depends on the Environment Working Voltage: 3.0-12V Working Current: 30mA(Input Voltage 5V) Section Precision: 4096 Size: 1.63*0.85*0.45in Package Information: Package Size: 20.6*10.2*17.3cm Package Weight: 740g General Box Package Package Included: 1* T8FB 1* R8EF Receiver 1* Spring Accessories 1* User Manual