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12CH Modbus RTU/TCP DIO Network Ethernet Controller RS485 Relay Module DC 12V 24V - 2 in 1 Integrated Circuit

Huaqingjun 12-Channel RS485 Communication Relay Module Modbus RTU Remote Control Module for Home Automation

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Huaqingjun 12-Channel RS485 LAN Relay Module Modbus RTU TCP RJ45 Ethernet QJ-12O1Z-T4L Relays Board for IoT Automation

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Modbus RTU 8-ch Latching Relay Module (C) with RS485 Interface, Multi Isolation Protection Circuits, Rail-mounted Case

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Huaqingjun 8DI 8DO Relay Output PLC RS485 232 2AI 2AO 0-10V 0-20mA Ladder Diagram Modbus RTU PLC Controller for HVAC System

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WS-1616S Transistor/Relay 16 point input/output RS485 Modbus-RTU Non isolated PLC Expansion Board

oshangming 16 Input 16 Relay Output PLC RS485 RS232 Modbus Rtu ladder Diagram PLC Controller

Modbus RTU Relay 16CH,RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case

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