An industrial-grade 8-channel relay module controlled via Ethernet, supporting Modbus RTU and Modbus TCP protocols. Features PoE power supply (IEEE 802.3af), optocoupler isolation, reverse-polarity protection, and a rail-mounted ABS enclosure for safe, easy installation.

Supports multiple communication modes including TCP Server/Client, UDP, HTTP, and MQTT (with Alibaba Cloud demo). Configuration is available via software or web browser. DHCP and DNS are supported for flexible network deployment.

Key Features

• 8-Channel Relay – Contact rating up to 10A 250VAC / 30VDC
• Ethernet Control – Modbus RTU and Modbus TCP protocols
• PoE Power Supply – IEEE 802.3af compliant
• MQTT Support – For IoT and cloud integration
• Flash On/Off – Timed relay control via command arguments
• Optocoupler Isolation – Prevents high-voltage interference
• Reverse-Polarity Protection – Prevents damage from incorrect wiring
• Rail-Mount ABS Case – Industrial DIN rail installation

Power Options

• PoE – IEEE 802.3af via Ethernet port
• DC Power Jack – 12V plug (adapter not included)
• Screw Terminal – 7–36V DC wide range input

Communication Modes

• TCP Server / TCP Client
• UDP / UDP Multicast
• HTTP / MQTT
• Modbus RTU / Modbus TCP

Ideal For

• Smart home automation (lighting, appliances, door curtains)
• Smart agriculture (solenoid valves, motors, water pumps)
• Industrial control systems

Package Contents

• 1× Modbus POE ETH Relay (in rail-mount case)

Resources

• Wiki