Using the RadioMaster R86 V2 Receiver is easy. First, make sure your device is within the 4.5 - 6V power input range. Connect the receiver to your drone or RC model according to the wiring diagram in the user manual. Turn on your transmitter and the receiver will automatically pair if it's compatible with Frsky D8/D16 or Futaba SFHSS. When using, keep in mind that the range is over 1km, but it's better to stay within a visible distance for safety. Also, the failsafe protection feature will activate if the signal is lost, so don't panic. For maintenance, keep the receiver dry and clean. Avoid dropping it or exposing it to extreme temperatures. If you have any problems, refer to the user manual or contact customer service.