![Amazon.com: Eletechsup Type-C USB Relay Module DC 5V PC UART Serial Port RS232(TTL) Switch Board (1 x 5V TTL232 Relay) : Electronics Amazon.com: Eletechsup Type-C USB Relay Module DC 5V PC UART Serial Port RS232(TTL) Switch Board (1 x 5V TTL232 Relay) : Electronics](https://m.media-amazon.com/images/I/51dRmyg+1CL.jpg)
Amazon.com: Eletechsup Type-C USB Relay Module DC 5V PC UART Serial Port RS232(TTL) Switch Board (1 x 5V TTL232 Relay) : Electronics
![Amazon.com: NOYITO HID Drive-Free USB Computer Control Switch Relay Module USB Smart Switch Control Plug and Play (1-Channel USB) : Electronics Amazon.com: NOYITO HID Drive-Free USB Computer Control Switch Relay Module USB Smart Switch Control Plug and Play (1-Channel USB) : Electronics](https://m.media-amazon.com/images/I/61p1AKPO7bL.jpg)
Amazon.com: NOYITO HID Drive-Free USB Computer Control Switch Relay Module USB Smart Switch Control Plug and Play (1-Channel USB) : Electronics
![Relay Controller,USB Relay Switch 12V 8 Channel Relay Module with USB Interface Drive-Free for Computer Smart Control Switch: Amazon.com: Industrial & Scientific Relay Controller,USB Relay Switch 12V 8 Channel Relay Module with USB Interface Drive-Free for Computer Smart Control Switch: Amazon.com: Industrial & Scientific](https://images-na.ssl-images-amazon.com/images/I/71I3lhZqC+L._AC_UL600_SR600,600_.jpg)
Relay Controller,USB Relay Switch 12V 8 Channel Relay Module with USB Interface Drive-Free for Computer Smart Control Switch: Amazon.com: Industrial & Scientific
![16-Kanal-Relaismodul, optisch isolierte USB-gesteuerte Relaiskarte, elektrische Schaltgeräte, optoisolierte Schaltrelaismodulkarte : Amazon.de: Baumarkt 16-Kanal-Relaismodul, optisch isolierte USB-gesteuerte Relaiskarte, elektrische Schaltgeräte, optoisolierte Schaltrelaismodulkarte : Amazon.de: Baumarkt](https://m.media-amazon.com/images/I/81g+xEt8W4L.jpg)
16-Kanal-Relaismodul, optisch isolierte USB-gesteuerte Relaiskarte, elektrische Schaltgeräte, optoisolierte Schaltrelaismodulkarte : Amazon.de: Baumarkt
![USB 4 Channel (10A) Relay Output Module,Board for Home Automation: Amazon.com: Industrial & Scientific USB 4 Channel (10A) Relay Output Module,Board for Home Automation: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71QUJKGt02L._AC_UF1000,1000_QL80_.jpg)
USB 4 Channel (10A) Relay Output Module,Board for Home Automation: Amazon.com: Industrial & Scientific
![fatteryu 1 2 4 8 Channel USB Relay Control Switch for Smart Home : Amazon.com.be: Industrial & Scientific fatteryu 1 2 4 8 Channel USB Relay Control Switch for Smart Home : Amazon.com.be: Industrial & Scientific](https://m.media-amazon.com/images/I/51XNVOe3BBL._AC_SY1000_.jpg)
fatteryu 1 2 4 8 Channel USB Relay Control Switch for Smart Home : Amazon.com.be: Industrial & Scientific
![Amazon.com: 5V 16 Channel USB Relay Module Computer Switch Control, USB Control Switch with PCB Board/High Sensitivity : Electronics Amazon.com: 5V 16 Channel USB Relay Module Computer Switch Control, USB Control Switch with PCB Board/High Sensitivity : Electronics](https://m.media-amazon.com/images/I/61NhCSJ3xSL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 5V 16 Channel USB Relay Module Computer Switch Control, USB Control Switch with PCB Board/High Sensitivity : Electronics
![DZS Elec 5V-30V 1 Channel Wilde Voltage 0-24s Adjustable Delay Internal/External Trigger Relay Board with Timer Delay Conduction Delay Circuit Switch with USB to Micro USB Power Line: Amazon.com: Tools & Home DZS Elec 5V-30V 1 Channel Wilde Voltage 0-24s Adjustable Delay Internal/External Trigger Relay Board with Timer Delay Conduction Delay Circuit Switch with USB to Micro USB Power Line: Amazon.com: Tools & Home](https://m.media-amazon.com/images/I/41GcMLI31XL._AC_UF1000,1000_QL80_.jpg)
DZS Elec 5V-30V 1 Channel Wilde Voltage 0-24s Adjustable Delay Internal/External Trigger Relay Board with Timer Delay Conduction Delay Circuit Switch with USB to Micro USB Power Line: Amazon.com: Tools & Home
![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 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](https://m.media-amazon.com/images/I/411dsLSTtPL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOUR%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA45%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
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-Kanal Typ-B USB Relais , elektronische Komponenten Module Board Modul Controller DC für Automation Robotik 12V : Amazon.de: Gewerbe, Industrie & Wissenschaft 8-Kanal Typ-B USB Relais , elektronische Komponenten Module Board Modul Controller DC für Automation Robotik 12V : Amazon.de: Gewerbe, Industrie & Wissenschaft](https://m.media-amazon.com/images/I/61RUDWO-iPL.jpg)
8-Kanal Typ-B USB Relais , elektronische Komponenten Module Board Modul Controller DC für Automation Robotik 12V : Amazon.de: Gewerbe, Industrie & Wissenschaft
![Amazon.com: NOYITO HID Drive-Free USB Computer Control Switch Relay Module USB Smart Switch Control Plug and Play (1-Channel USB) : Electronics Amazon.com: NOYITO HID Drive-Free USB Computer Control Switch Relay Module USB Smart Switch Control Plug and Play (1-Channel USB) : Electronics](https://m.media-amazon.com/images/I/71+9zT4FaUL.jpg)
Amazon.com: NOYITO HID Drive-Free USB Computer Control Switch Relay Module USB Smart Switch Control Plug and Play (1-Channel USB) : 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 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](https://m.media-amazon.com/images/I/61f+kbhC+aL._AC_UF350,350_QL80_.jpg)
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: 8-Channel DC 12 V Computer USB Control Switch Relay Module USB Switch Controller with Imported High-Performance USB Control Chip : Automotive Amazon.com: 8-Channel DC 12 V Computer USB Control Switch Relay Module USB Switch Controller with Imported High-Performance USB Control Chip : Automotive](https://m.media-amazon.com/images/I/71wR1YW-8qL.jpg)
Amazon.com: 8-Channel DC 12 V Computer USB Control Switch Relay Module USB Switch Controller with Imported High-Performance USB Control Chip : Automotive
![SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/41aYDXWyvJL._AC_UF1000,1000_QL80_.jpg)
SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific
![Amazon.com: ASHATA Relay Module, 4-Channel 12V Computer USB Smart Switch Controller PC Relay Module Expansion Board Use Imported High Performance USB Control Chip. : Industrial & Scientific Amazon.com: ASHATA Relay Module, 4-Channel 12V Computer USB Smart Switch Controller PC Relay Module Expansion Board Use Imported High Performance USB Control Chip. : Industrial & Scientific](https://m.media-amazon.com/images/I/61wZ3Wm+buL._AC_UF894,1000_QL80_.jpg)
Amazon.com: ASHATA Relay Module, 4-Channel 12V Computer USB Smart Switch Controller PC Relay Module Expansion Board Use Imported High Performance USB Control Chip. : Industrial & Scientific
![HALJIA USB Relay Module USB Smart Control Switch Intelligent Switch Control USB Relais modul: Amazon.de: Computer & Zubehör HALJIA USB Relay Module USB Smart Control Switch Intelligent Switch Control USB Relais modul: Amazon.de: Computer & Zubehör](https://m.media-amazon.com/images/I/71z1ZoSJVKL._AC_UF894,1000_QL80_.jpg)