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Amazon.com: SainSmart USB Eight Channel Relay Board for Automation - 12 V : Industrial & Scientific
SMAKN LCUS-1 type USB relay module USB intelligent control switch USB switch : Electronics - Amazon.com
LCUS-1 5V USB Relay Module CH340 USB Intelligent Control Switch: Amazon.com: Industrial & Scientific
Amazon.com: NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB) : Electronics
Amazon.com: 8CH 12V USB Relay Module Controller FTDI chip Relay Controller Type B USB Relay Board Module Controller for Automation Robotics : Industrial & Scientific
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