Introduction

The RLY-8 is a network relay controller with open source communication protocol. It integrates 8

channel relays and each relay could stand 277VAC-10A or 125VAC-12A power. Meanwhile most of

the household appliances are under 250VAC, it means you could use it almost everywhere.

The RLY-8 is using STM32 microcontroller. It supports 2 types of power supply: Wall adapter or PoE

(Power over Ethernet) power supply. You could reduce its connection cable via PoE power supply.

In addition, you also could control it via RS485 port or TCP/IP protocol. And RS485 and JSON

protocol has been opened on the website.

This Ethernet relays are really great for IoT projects - with 8 relays, you have plenty of scope to try

different things. Like a remote control light, a autoflowering greenhouse. With the open source

protocol, you could add it in plenty of things you can do with this besides, just use your imagination!

Specification



Operating Voltage: DC:7-23V



Relay number: 8

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Data Communication: Ethernet/RS485



Network Configuration: Supports DHCP and Static IP



Power Consumption: Max 3.5W

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Maximum Control: 277VAC-10A/125VAC-12A



Control Mode: Ethernet/RS485



Factory Settings: IP: 192.168.1.10 (port: 2000)



Working Temperature: -30~85



Weight: 530g



Size: 145mm * 90mm * 40mm (5.7in * 3.5in * 1.6in)

Tutorial

Requirements



Hardware

POE relay x1

PC X1

USB to RS485 transfer line or ethernet cable

POE Ethernet switch or ordinary Ethernet switch



Software

PC Software (Windows) Click to Download

Connection Diagram

RLY-8-PoE-RS485 supports 2 types of control mode: Ethernet and RS485

In this section, we will introduce some typical connection: