2Pcs CH9121 Microcomputer Networking Module Serial to Ethernet Adapter Single Chip CH9121 Serial to Ethernet Network Module 4 Mode RJ45 300bps ~ 921600bps Serial Baud Rate STM32 UART
CH9121 serial port to Ethernet module is equipped with CH9121 network serial port transparent transmission chip. CH9121 internally integrates TCP/IP protocol stack, which can realize two-way transparent transmission of network data packets and serial port data
Serial port TTL level, compatible with 3.3V and 5V; Serial port supports full duplex and half duplex serial port communication, and supports RS485 transceiver automatic switching
Serial port baud rate supports 300bps ~ 921600bps, power supply voltage: 3.3V/5V
The baud rate of serial port can be up to 921600bps, which can be easily configured through upper computer software or serial port commands, which is convenient and fast.
It has 4 working modes: TCP CLIENT, TCP SERVER, UDP CLIENT and UDP SERVER, which match various usage requirements of buyers.
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