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Modbus RTU 4 Channel Relay Module 12V DIY STM8S103 System 4 Road Input Optocoupler Isolation RS485 Communication

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Oem Odm Web Managed 8Port Gigabit Ethernet 8 Port Switch

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NT28B16 TB438 16Ch RS485 Temperature Data Logger with Modbus RTU&NTC Sensor Module Board

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PT21A01 DC12V PT100 RTD Converter with RS485 Modbus RTU Sensor for Accurate Temperature Monitoring

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