Relay Controller 8-Channel General Purpose SPDT + 8 Channel ADC ProXR Lite - store.ncd.io
Amazon.com: 8-Channel 12V USB Relay Board, 8-Channel 12VDC Type-B USB Relay Board Module Controller for Automation Robotics : Electronics
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
12V USB Relay 8 CH Channel Programmable Computer Control For Smart Hom – diymore
Devantech 8-Channel USB Relay Module - RobotShop
RL80001 Numato Lab | Relays | DigiKey Marketplace
8 Channel 5V HID Driverless USB Relay USB Control Switch Computer Control Switch PC Intelligent Control