Radiomaster 2.4GHz RM 4IN1 Module is an external module RadioMaster 4IN1 is a multiprotocol module that integrates CC2500, NRF24L01, A7105 and CYRF6936 RF chips. Designed for OpenTX and EdgeTX systems, the RM 4IN1 module allows the radio to connect to most common protocols on the market.
The module can be used with both a conventional JR shaft and a Nano-sized shaft.