Features: Digital proportional radio control system. The RX SET(receiver setting) menu provides a number of function setting menus to allow you to set up the receiver system in all aspects. User-friendly design for each operation and handling. With lightweight and portable size, it is easy and convenient to carry and use. Ergonomics, comfortable hand feel, not easy to sweat. Specifications: Brand: FLYSKY Product Model: FS-ST8 Channels: 8-10 Adaptive Receiver: FS-SR8 ( Adapts Receiver with ANT Protocol ) Model Type: Helicopters, Gliders, Delta-wing Airplanes, Multicopters, Engineering vehicles, Robots, Cars or Boats, etc. RF: 2.4GHz ISM Maximum Power: < 20dBm (e.i.r.p.) EU 2.4GHz Protocol: ANT Distance: >1000mAir distance without interference Channel Resolution: 4096 Battery: 1.5AA*4 / 2S LipoJST Charging Interface: NO Data Output: PWM/PPM/i-BUS/S.BUS Low Voltage Warning: AA battery: