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Amazon.com: NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB) : Electronics
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Amazon.com: AEDIKO Relay Module 16 Channel DC 12V Relay Switch Module Compatible with DSP AVR PIC ARM DIY : Industrial & Scientific
LCUS-1 5V USB Relay Module CH340 USB Intelligent Control Switch: Amazon.com: Industrial & Scientific
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Amazon.com: NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB) : Electronics
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Amazon.com: NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB) : Electronics
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Amazon.com: NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB) : Electronics
Amazon.com: HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino : Industrial & Scientific
Amazon.com: EC Buying 2Pcs LCUS-2 Type Dual-Channel Semiconductor Chip Housings 2-Channel USB Relay Module 5V Relay Module Onboard CH340 Microcontroller Chip USB Intelligent Control Switch Module : Industrial & Scientific