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TOSR02 - 2 Channel USB/Wireless Relay Module
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KMtronic Ltd: USB Relay Controller One Channel
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USB Eight Channel Relay Controller - RS232 Serial controlled - 12V
Amazon.com: Diyeeni 4-Channel 12V USB Control Switch Relay Module, Relay Board Computer Smart Switch Controller, PC Relay Module Expansion Board, Relay Board for Automation : Electronics
TOSR04 - 4 Channel USB/Wireless 5V Relay Module
Amazon.com: Diyeeni 4-Channel 12V USB Control Switch Relay Module, Relay Board Computer Smart Switch Controller, PC Relay Module Expansion Board, Relay Board for Automation : Electronics
Amazon.com: Diyeeni 4-Channel 12V USB Control Switch Relay Module, Relay Board Computer Smart Switch Controller, PC Relay Module Expansion Board, Relay Board for Automation : Electronics
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Relay Controller,USB Relay Switch 12V 8 Channel Relay Module with USB Interface Drive-Free for Computer Smart Control Switch: Amazon.com: Industrial & Scientific
USB relé 2 kanál 5V s Attiny45 | dratek.cz
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2 Channel USB Relay Module
Usb Relay 2 Channel Programmable Computer Control | 5v Usb Relay Computer Control - Relays - Aliexpress
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