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Waveshare Industrial Modbus RTU 8-Ch Relay Module (E) With RS485 Interface, 30A High Current, Multi Isolation Protection Circuits, Onboard Optocoupler Isolation, Rail-Mounted Case
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TUOPUONE Dual Ethernet Ports 8-ch Relay Module (C) Modbus RTU Protocol PoE Power Supply With Various Isolation And Protection Circuits Industrial Grade Rail-Mount Case
