Connection diagram between JZX302 interface conversion module and JZX wireless module:

Note: When using the JZX302 conversion module, please confirm whether the device interfaces are the same first,
1. USB-TTL interface: It must be connected to a wireless module or device with TTL serial port level in order to be used;
2. USB-RS232 interface: It must be connected to a wireless module with RS232 serial port level in order to use.