KMtronic Ltd: USB Relay Controller One Channel
4-Channel USB Relay Board with 6-Channel A/D Interface
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6-30V Micro USB Relay Module Delay Trigger Cycle Timer Time Circuit LCD Switch | eBay
USB Relay Controller - One Channel - PCB
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DC 12V 8 Channel Relay Module USB Computer Control Board for Home Automation - Walmart.com
USB Relay Card;4 Relays/Relays 220V/USB Relay Board 3800159300108 | eBay
USB Relay Board - High Power USB Relays for Industrial Applications
USB Relay for Windows, Mac, and Linux - Industrial Grade
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USB Relay Card;4 Relays/Relays 220V/USB Relay Board 3800159300108 | eBay
KMtronic Ltd: USB Relay Controller One Channel
5V 1 Channel USB Relay Module Programmable Computer Control Relay Switch For Smart Toy Home 1 Way Relays Board
KMtronic Ltd: USB Relay Controller One Channel
USB Eight Channel Relay Board for Automation
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SainSmart 4-channel 5V USB Relay Module for Automation Robotics – SainSmart.com
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USB Relay Controller - High Power USB Relays for Industrial Applications
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USB Relay for Windows, Mac, and Linux - Industrial Grade
USB Relay Card;4 Relays/Relays 220V/USB Relay Board 3800159300108 | eBay
