[Interface]:USB
[Size]:115.0*60.0mm
[Introduction]:It is used to test and develop Chengdu Ebyte RD400D wireless transmission module. RD400D-TB contains RD400D module. For detailed use, refer to the RD400D module user manual; all IOs of the RD400D wireless data transmission module have been exported; with CH340X USB to serial port chip, you can use USB Interface for serial communication development; with WS3232 RS232 to serial chip, you can use RS232 interface for serial communication development; users need to connect external DC power supply and serial port for secondary development; work stable and easy to develop.

| No. | Interface description |
| ① | Micro USB interface |
| ② | RS232 interface |
| ③ | DC interface, 5~24V DC power supply interface |
| ④ | Terminal block, 5~24V DC power supply interface |
| ⑤ | reset button |
| ⑥ | mode selection port |
| ⑦ | Communication interface selection port |
| ⑧ | Power Indicator |
| ⑨ | Data receiving indicator |
| ⑩ | Data sending indicator |
| ⑪ | SMA-K antenna interface |
| ⑫ | Module installation position |
| ⑬ | Signal Strength Indicator Port |
