USB to nRF24L01+ module realizes the conversion of 2.4G wireless module SPI interface to TTL serial port and then converts to USB interface communication through USB to TTL serial port chip. That is, USB interface 2.4G wireless module = 2.4G wireless module SPI interface + STM32 microcontroller + USB to serial port chip CH340. Customers do not need to know the communication protocol of 2.4G wireless module in detail, but only need to know how to use the serial port to operate it. Through the serial port assistant, a few AT commands can be used to configure the wireless communication parameters. The system parameter settings not be lost when the power is off, and the last state be maintained after power-on. The built-in watchdog anti-crash program can run stably in industrial control occasions with harsh environments. Shorten the cycle and facilitate the rapid verification and testing of the wireless communication system designed by yourself. The RFX2401C RF front-end amplifier chip can amplify the wireless signal to a maximum of 22dBm, effectively increasing the signal communication distance. [Product parameters] Number of valid bytes for a single transmission: 1-31 bytes Communication format with other wireless modules: The 0th bit is the length of the transmitted data Open communication distance: Theoretically up to 500m (250Kbps) Supports 32/64-bit versions Colour:Transparent shell Material:plastic Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Wireless WiFi Dongle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.