BetaFPV LiteRadio 3 Pro Radio Transmitter (ELRS or Frsky Multi-protocol)LiteRadio 3 Pro Radio TransmitterAn open source radio remote control that supports the EdgeTX system. It comes with the hall gimbals, featuring four precision bearings, adjustable spring tension, and ergonomic stick ends for an unparalleled feel. The OLED display screen on the top of the transmitter brings visually instant data and a controlling interface to users. What's more, two optional internal RF systems and alternative external nano TX module