10 Pack Eport-E20 TTL Serial to Ethernet Embedded Module, FreeRTOS TCP/IP Network Converter 3.3V MCU Module Supports DHCP & Telnet for IoT Secondary Development

Eport-E20 is a tiny serial-to-Ethernet embedded conversion module equipped with mature FreeRTOS TCP/IP protocol stack, realizing bidirectional transparent transmission between MCU TTL serial port and Ethernet network. It adopts 3.3V low-voltage working design, which can be directly connected with the IO port of most microcontrollers without additional level conversion circuits.

This module supports multiple mainstream transmission modes including TCP Server, TCP Client, UDP and Telnet, and integrates DHCP automatic IP acquisition function, avoiding tedious static IP configuration during mass equipment deployment. It can upload serial data to remote servers and receive network instructions to control local serial peripherals, widely used in intelligent hardware, industrial data acquisition and remote monitoring projects.

With ultra-small lightweight PCB structure, it can be flexibly embedded into custom circuit boards of various IoT terminals. The package contains 10 modules, sufficient for prototype testing, small-batch production and equipment maintenance. No complicated peripheral circuits are needed, effectively shortening the R&D cycle of network-connected MCU products.