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SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific
RPi Relay Board - PiShop.us
16-Channel 9-36V USB Relay Module – SainSmart.com
USB PowerControl board V2 w/Grove Control - USB to USB solid state rel – SwitchDoc Labs
Numato 8 Channel USB Relay Module, External Power Supply | AltonaLab
SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific
2 Channel USB Relay Module
1 Channel USB Relay DC 5V Programmable Module - ElectroPeak
USB Relay Controller Board - 4 Channels for Home Automation
USB Relay for Windows, Mac, and Linux - Industrial Grade
USB Relay Module – 4/8 Channels | USB Digital Output Module
TSIR04 - 4 Channel Outputs ,4 optically Isolated Inputs USB Relay Module
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Relay module 5V - 2 channels for Raspberry PI, Arduino, PIC,AVR
USB Relay Controller - High Power USB Relays for Industrial Applications
Amazon.com: Newest Raspberry Pi 8-Channel Relay Expansion Board 5V Power Relay Module for Raspberry Pi 4 3 2 Model B+ B Jetson Nano @XYGStudy : Electronics
KMtronic Ltd: USB Relay Controller One Channel
Relay card 24V - 16 channels for Raspberry PI, Arduino, PIC,AVR
USB Relay Controller 16 Channels - Virtual Serial /COM/ Port, optical isolation | eBay
Amazon.com: XYGStudy Raspberry Pi Expansion Board Power Relay Module for Raspberry Pi 4 3 2 Model B B+ A+ : Electronics
KMtronic Ltd: USB Four(4) Relay Controller
USB Eight Channel Relay Board for Automation
Amazon.com: SainSmart USB Eight Channel Relay Board for Automation - 12 V : Industrial & Scientific
