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Industrial Modbus RTU 8-ch Relay Module with RS485 Bus Interface Embedded Multi Isolation Protection Circuits ABS Enclosure Safe & Stable & Reliable @
$
104
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Waveshare 8-Ch Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits, Industrial Grade Rail-Mount Case
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89
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8-CH Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits
$
86
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Digital Thermatic Fan Switch Kit #0444
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