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Sinelec Technologies
USB 8 Channel Relay Board
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USB Relay for Windows, Mac, and Linux - Industrial Grade
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8-Channel 12V USB Relay Board, 8-Channel 12V DC Type-B USB Relay Board Module Computer Controller for Automation Robots _ - AliExpress Mobile
USB Eight Channel Relay Board for Automation
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8-Channel USB Relay Card
USB Relay Controller Board - 4 Channels for Home Automation
Custom Firmware Teaches USB Relay Board New Tricks | Hackaday
USB Relay Controllers with On-Board Analog Inputs and GPIO for Sensors
USB Relay
