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LCUS - type 1 USB relay module USB intelligent switch control - Walmart.com
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1/2/4/8 Ch 5V 10V USB Relay Programmable Computer Control Relay For Smart Home | eBay
KMTronic USB 8 Channel Relay Board, RS232 Serial controlled | eBay
NOYITO 4-Channel 12V Computer USB Control Switch Relay Module Drive-Free Relay Module Plug and Play Suitable for PC Smart Controller: Amazon.com: Industrial & Scientific
8 Channel USB Relay Module
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16 Channel USB Relay Module With GPIO And Inputs | Numato Lab
