IRangeX IRX4 LITE CC2500 NRF24L01 A7105 CYRF6936 4 IN 1 Multiprotocol TX Module for Frsky X lite Note The STM32 MCU have change to ARM fireware is ARM CORTEX MThe new stock will be ARM Existing inventory is not affectedSpecification Brand name IRangeXOperating voltage 5 9VOperating current 180mAOperating frequency 2 4G ISM bandRF power 22dBmMCU ARM CORTEX M 128K ROM 20K RAM Weight 32gOverview This 4 in 1 TXmodule is suitable for FRSKY X Lite It integrates four RF chips CC2500 NRF24L01 A7105 CYRF6936 into one single circuit board it supports a variety of remote control protocols such as Futabas S FHSS Walkera DEVO Spektrum DSM2 DSMX Flysky Frsky WLToys Hubsan Hisky Esky Assan etc You can control your model flexibility with it and you will get much excellent experience with you favorite transmitter This module is compatible with the Multi module project on github It s based on ARM microcontroller All available protocols are included in serial mode In this mode it uses a serial protocol to communicate with your transmitter The serial protocol does not require any hardware modifications but you should update the firmware on your transmitter to the latest Then the model protocol selection and binding is done from the Model Settings menu on your transmitter For telemetry capable transmitters the telemetry integration is done seamlessly with the transmitter firmware How to use 1 Refer