{"title":"8-ch Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE port Communication, With Various Isolation And Protection Circuits","handle":"8-ch-ethernet-relay-module-modbus-rtu-modbus-tcp-protocol-poe-port-communication-with-various-isolation-and-protection-circuits","url":"/products/8-ch-ethernet-relay-module-modbus-rtu-modbus-tcp-protocol-poe-port-communication-with-various-isolation-and-protection-circuits","description":"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.\n\nSupports 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.\n\nKey Features\n\n\n8-Channel Relay – Contact rating up to 10A 250VAC / 30VDC\n\nEthernet Control – Modbus RTU and Modbus TCP protocols\n\nPoE Power Supply – IEEE 802.3af compliant\n\nMQTT Support – For IoT and cloud integration\n\nFlash On/Off – Timed relay control via command arguments\n\nOptocoupler Isolation – Prevents high-voltage interference\n\nReverse-Polarity Protection – Prevents damage from incorrect wiring\n\nRail-Mount ABS Case – Industrial DIN rail installation\n\n\nPower Options\n\n\nPoE – IEEE 802.3af via Ethernet port\n\nDC Power Jack – 12V plug (adapter not included)\n\nScrew Terminal – 7–36V DC wide range input\n\n\nCommunication Modes\n\nTCP Server / TCP Client\nUDP / UDP Multicast\nHTTP / MQTT\nModbus RTU / Modbus TCP\n\n\nIdeal For\n\nSmart home automation (lighting, appliances, door curtains)\nSmart agriculture (solenoid valves, motors, water pumps)\nIndustrial control systems\n\n\nPackage Contents\n\n1× Modbus POE ETH Relay (in rail-mount case)\n\n\n\nNote: External power supply adapter is not included. A 12V adapter is recommended if not using PoE.\n\n\nResources\n\nWiki\n","vendor":"Waveshare","product_type":"","in_stock":true,"options":[],"variants":[{"id":1432,"title":"Default Title","sku":"WS-24964","price":62.06,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":11,"option1":"Default Title"}]}