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5V USB Relay with Optocoupler Isolation Industrial Grade Support UART Serial Port Signal Control NO/COM/NC Load 2 Channel Relay

5V USB Relay with Optocoupler Isolation Industrial Grade Support UART Serial Port Signal Control NO/COM/NC Load 2 Channel Relay

Limited time offer, ends 07/19

Model #: 604721825999

$53^.39 –
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2 Channel Serial Port Relay Module DC 12V PC Computer USB RS232 DB9 RS485 UART Remote Control Switch Board for Smart Home (4)

2 Channel Serial Port Relay Module DC 12V PC Computer USB RS232 DB9 RS485 UART Remote Control Switch Board for Smart Home (4)

Model #: CLAWB0C1GK6Q6Q

$77^.19 –
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Jeanoko RS232 DB9 Female Interface 16-Channel Relay Board Serial Port Smart Module 8 Working Modes Relay Module for Automation Control

Jeanoko RS232 DB9 Female Interface 16-Channel Relay Board Serial Port Smart Module 8 Working Modes Relay Module for Automation Control

Model #: 9435761115075

$46^.99 –
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Waveshare Industrial Modbus RTU 4-ch Relay Module with RS485 Interface, 30A High Current, Onboard LED Indicators, Multi Isolation Protection Circuits, Industrial Grade Rail-Mount Case

Waveshare Industrial Modbus RTU 4-ch Relay Module with RS485 Interface, 30A High Current, Onboard LED Indicators, Multi Isolation Protection Circuits, Industrial Grade Rail-Mount Case

Model #: 124184301415

$85^.99 –
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Waveshare Industrial Modbus RTU 8-ch Relay Module (E) with RS485, 30A High Current, Multi Isolation Protection, Optocoupler Isolation, Flyback Diode Protection, Rail-Mounted Case.

Waveshare Industrial Modbus RTU 8-ch Relay Module (E) with RS485, 30A High Current, Multi Isolation Protection, Optocoupler Isolation, Flyback Diode Protection, Rail-Mounted Case.

Model #: 683491599088

$129^.59 –
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waveshare 8-CH Modbus RTU Relay Module with RS485 Interface, Modbus RTU Protocol, 7~36V Power Supply, Multi Isolation Protection Circuits Such as Power Isolation, Magnetical Isolation, TVS Diode etc.

waveshare 8-CH Modbus RTU Relay Module with RS485 Interface, Modbus RTU Protocol, 7~36V Power Supply, Multi Isolation Protection Circuits Such as Power Isolation, Magnetical Isolation, TVS Diode etc.

Model #: 9550675442496

$76^.99 –
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