Amazon.com: 8-Channel 12V USB Relay Board, 8-Channel 12VDC Type-B USB Relay Board Module Controller for Automation Robotics : Electronics
4-Channel USB Relay Board with 6-Channel A/D Interface
Usb Relay 2 Channel Programmable Computer Control Power Supply Module For Smart Home Controller Board Dc 5v 250v 10a - Integrated Circuits - AliExpress
16 Channel USB Relay Module With GPIO And Inputs | Numato Lab
Devantech 6 x 16A USB Relay Board USB-RLY06 - RobotShop
USB Relay Module – 4/8 Channels | USB Digital Output Module
USB Relay 1 Channel | 102056 | Other by www.smart-prototyping.com
Amazon.com: SainSmart USB Eight Channel Relay Board for Automation - 12 V : Industrial & Scientific
RL80001 Numato Lab | Relays | DigiKey Marketplace
4 Channel USB Relay Module_ Botland - Robotic Shop
Devantech USB-RLY06 - 6 x 16A USB relay | Acroname
Devantech 8-Channel USB Relay Module - RobotShop
ADU200 USB Relay I/O Interface Module ( 5 AMP )
USB 4 Relay controller - thermoregulator with sensor TCN75A
Devantech USB-RLY16L - 8 x 16A Latching Relay | Acroname
TOSR04 - 4 Channel USB/Wireless 5V Relay Module
USB Relay Controller - Two Channels with clips for DIN mount rail