5V 12V 24V 4 Channel USB Relay Control Switch Programmable Computer Control For Smart Home PC Intelligent Controller|Relays| - AliExpress
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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
USB Relay Controller - Eight Channel with clips for DIN mount rail
8 Channel USB Relay Module | Numato Lab
SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific
USB 4 Relay controller - thermoregulator with sensor TCN75A
USB Eight Channel Relay Board for Automation
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TOSR02 - 2 Channel USB/Wireless Relay Module
USB Relay Controller Board - 4 Channels for Home Automation
NOYITO 4-Channel 12V Computer USB Control Switch Relay Module Drive-free Relay Module Plug and Play Suitable for PC Smart Controller - - Amazon.com
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8-channel 12V USB Relay Module | SainSmart – SainSmart.com
Tebru 8-channel 12V Computer USB Intelligent Control Switch Relay Module Free driver, Relay Module,Switch - Walmart.com
Dc 12v 4 Channel Rs232 Relay Board Pc Usb Uart Db9 Remote Control Switch For Smart Home Garage Door Car Alarm Farm Motor - Integrated Circuits - AliExpress
Usb Relay Board
32 Channel USB Relay Module With GPIO And Analog Inputs | Numato Lab
Amazon.com: SainSmart 16-Channel 9-36V USB Relay Module : Automotive
SainSmart 4-channel 5V USB Relay Module for Automation Robotics – SainSmart.com