• 2.4G CC2500 A7105 Flysky Frsky Devo DSM2 Multiprotocol TX Module With Antenna




The 4 in 1 wireless module integrate four RF chips (CC2500,NRF24L01,A7105,CYRF6936) into one single circuit board,with MCU baseplate,can support a variety of remote control protocols by identifying the PPM signal output of the remote control,such as Walkera DEVO,Spektrum DSM2,Flysky,Frsky,WLToys,Hubsan,Hisky,etc. It can control up to several hundreds airplanes (or receivers).

This module can recognize the remote control PPM signal, then converted into the corresponding standard wireless remote control format,which means that in theory as long as the remote control is with analog functions, it can work. But this item didn't come with a housing,so you will need to solve the housing problem.

This product includes the wireless module and the MCU baseplate. The wireless module is responsible for transmitting and receiving 2.4G wireless signals,the MCU baseplate is responsible for processing data and implementing remote control protocol,they should be used together.


Item Name: 4 in 1 multi-protocol wireless module

Weight: About 28g

Size: 13*8*1cm

Version: Flysky,Frsky,JR (optional)


The module version depends on your transmitter brand,if your transmitter brand is JR,then please choose JR version,the Flysky version is specially for Flysky TH9X transmitter,the other brands transmitter can choose Frsky.

Pin Function:

Number Name Property Description

1 VCC Power 3.3V Power supply

2 GND Power ground

3 PE1 input Amplifier and antenna switching signal. See the truth table

4 PE2 input Amplifier and antenna switching signal. See the truth table

5 CSN1 input A7105 chip select signal

6 CSN2 input CC2500 chip select signal

7 CSN3 input NRF24L01 chip select signal

8 CSN4 input CYRF6936 chip select signal 

9 SCK input SPI clock signal

10 MOSI input SPI input for slave device

11 MISO output SPI output for slave device

12 CYRF_RST input CYRF6936 Reset

16 RFO in/out RF signal input/output, connect to antenna

others GND Power ground 

Truth table:

status PE1 PE2

A7105 RF signal to antenna 0 0

CC2500 RF signal to antenna 0 1

NRF24L01 RF signal to antenna 1 0

CYRF6936 RF signal to antenna 1 1

For more information about how to update, please visit the RCG forum:


If you have any problem,welcome to discuss on this RCG forum:


Supported Protocols:

 - Flysky (Generation I protocol,based on A7105,tested)

- Hubsan (Based on A7105,tested)

- Frsky (Based on CC2500,tested)

- Hisky (Based on24L01,tested)

- V2x2 (Based on 24L01)

- Dsm2 (Based on CYRF6936,tested)

- Devo (Based on CYRF6936,tested)

- YD717 (Based on 24L01 )

- KN (V977,Based on 24L01,tested)

- SymaX (Based on 24L01)

- SLT (Based on 24L01)

- CX10 (Based on 24L01)

- CG-023




The above protocols are transplanted from open source projects based on the remote control Walkera DEVIATION,the the original author have tested almost the protocols,but he is not specially test for this 4 in 1 wireless module,the protocols our supplier tested have been stated above,untested protocols does not rule out is not supported,but there may be a problem of program configuration,so not rule out the subsequent firmware can support.

Open source protocol is mostly cracked,protocol version is constantly updated,inevitably there are omissions. Including but not limited to the following issues:

- Part program version DSM2 have protocol compatibility problems.

- Some receiver (original AR600) need to rebind per use,some receiver (Spektrum integrated receiver) frame rate is a bit slow. This issue basically determine the problem is on the program itself.

Tested Ground Control Distance:

CC2500: V8FR receiver with Frsky protocol,about 240m.

A7105: WLToys V911 helicopter with Flysky 8 ch receiver,based on Flysky protocol,about 240m.

CYFR6936: Spektrum MCPX helicopter with DSM2 protocol,Walkera SUPERCP helicopter with DEVO protocol,about 200m,

NRF24L01: WLToys V977 helicopter with KN protocol,use Walkera DEVO transmitter,about 200m (If equipped with MCU baseplate,only 50m). Hisky HCP100S helicopter with Hisky protocol,about 70m.

Firmware & Software,please Click Here

Package Included:

1x 4-in-1 wireless module

2x Antennas (as the picture shows)

2.4G CC2500 A7105 Flysky Frsky Devo DSM2 Multiprotocol TX Module With Antenna

  • Product Code: RC
  • Availability: In Stock
  • $39.99