16 Channel USB Relay Module With GPIO And Inputs | Numato Lab
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16 Channel USB Relay Module With GPIO And Inputs | Numato Lab
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Zerodis USB Relay Control Switch, USB Relay Module, Double-Sided Circuit Board For Industry Serial Port Control Relay Module Home Serial Port Communication - Walmart.com
USB Relay Controller - Two Channels with clips for DIN mount rail
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USB Relay Controller 16 Channels - Virtual Serial /COM/ Port, optical isolation | eBay
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Desktop Sounder Software for PC - Valcom UK
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KMTronic USB One Relay Controller, RS232 Serial controlled, BOX, DIN rail | eBay
16 Channel USB Relay Module
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8-channel 12V USB Relay Module | SainSmart – SainSmart.com
