8 Channel USB Relay Module
USB Relay Board - High Power USB Relays for Industrial Applications
KMtronic Ltd: USB Four(4) Relay Controller
USB/Wireless 5V Relay Module
5V USB 4 Channel Automation Relay Computer Control for Arduino – Aideepen
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
Numato 4 Channel USB Relay Module, External Power Supply | AltonaLab
USB Relay
How to control USB 4 relay board through windows operating system - YouTube
TOSR140 - 4 Channel USB Relay - (Password/Momentary/Latching)
USB Relay Module – 4/8 Channels | USB Digital Output Module
USB Relay 4 Channel Board v2 Programmable PC Computer Control For Smart Home | eBay
TOSR04 - 4 Channel USB/Wireless 5V Relay Module Modules | JSumo.com
TONKBEEY Relay Module Relay Control Panel with Indicator 4 Way Relay Output USB Interface - Walmart.com
4 Channel USB Powered Relay Module With GPIO | Numato Lab
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 4 Channel Relay Board
USB 4 Channels (10A) Relay Module, for Home Automation - v2: Amazon.com: Industrial & Scientific
USB Switch Module, Stable Connection Relay Module Switch Convenient PCB Board Production DC 12 V 4 Channel For PC - Walmart.com
TOSR140 - 4 Channel USB Relay - (Password/Momentary/Latching)
SainSmart 4-channel 5V USB Relay Module for Automation Robotics – SainSmart.com
4-Channel USB Relay Board with 6-Channel A/D Interface
