Ethernet To UART Converter For Raspberry Pi Pico, 10/100M Ethernet, Enabling Network Communication Through UART. The CH9121 is a transparent network serial port chip that supports bidirectional and transparent transmission of serial port data and network data. It supports four working modes: TCP CLIENT/SERVER and UDP CLIENT/SERVER. The serial port baud rate ranges from 300bps to 921600bps. Before using, you should set network and serial port parameters for the chip by the NetModuleConfig.exe software or serial commands. After the configuration is complete, the CH9121 saves the configuration parameters to the internal storage space. After the chip is reset, the CH9121 could work based on the saved configuration values.

Features:

1. Standard Raspberry Pi Pico header, supports Raspberry Pi Pico series
2. Onboard Ethernet to UART transparent transceiver, 2-CH UART, standalone transparent transmission for each channel
3. Supports DHCP auto-obtained IP and DNS domain access
4. Network parameter configuration like chip operating mode, port, IP, via host computer software or UART command
5. Four operating modes: TCP CLIENT, TCP SERVER, UDP CLIENT, UDP SERVER
6. Full-duplex or half-duplex UART communication supports RS485 RX/TX auto switch (external RS485 controller required)
7. Supports virtual serial port software (provided)
8. KEEPALIVE mechanism support

Package Includes:

1 x Waveshare Ethernet to UART Converter for Raspberry Pi Pico - 10/100M Ethernet

Specifications :-

UART Baudrate	300-921kbps
Operating Current (A)	140mA
Operating Temperature Range (C)	-40 to 85
Operating Voltage(V)	3.3 to 5