1. USB wireless serial data transmission module, support AT commands to configure the system
2. Adopts stable CH340T, makes USB to serial port
3. Built-in anti-crash watchdog procedures, use under the harsh environment of industrial control occasions.
4. NRF24L01 module plug in a reverse direction will not work, even might NOT burn the board
5. With this module you can do wireless serial transmission distance farther (100~1100m, depending on the wireless module used), far higher than Bluetooth (10m) serial transmission distance