LILYGO T-Relay W5500 Shield - image 1
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LILYGO·unknown

LILYGO T-Relay W5500 Shield

A relay and Ethernet shield expansion board featuring the W5500 Ethernet controller, designed to add wired network connectivity and relay switching to LILYGO T-series development boards.

Starting from

$8.59

#accessory#shield#relay#ethernet#w5500#lilygo

Connectivity

EthernetSupported

Resources

Product Page

Official manufacturer page

GitHub Repository

Source code & hardware files

Wiki / Documentation

Technical documentation

Where to Buy

LILYGO Official favicon
LILYGO Official
$8.59

Overview

The T-Relay W5500 Shield is an expansion shield that adds both relay switching capabilities and wired Ethernet connectivity to compatible LILYGO development boards via the W5500 Ethernet controller chip. This combination makes it well-suited for home automation and industrial IoT applications where reliable wired networking is preferred over wireless.

The W5500 is a hardwired TCP/IP embedded Ethernet controller that supports full-duplex 10/100Mbps operation and communicates via SPI. Combined with relay outputs, this shield enables building network-controlled switching applications without relying on WiFi.

It is designed for engineers, students, and makers who need reliable Ethernet-based control in their projects. Documentation and sample code are available through the LILYGO GitHub organization.

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