USB-OPTO-RLY816 - 8 optically isolated inputs, 8 x 16A relays
4 Channel USB Relay Module With GPIO And Analog Inputs | Numato Lab
USB Eight Channel Relay Board for Automation
1 Channel USB Relay DC 5V Programmable Module | ElectroPeak
USB Relay Controllers with On-Board Analog Inputs and GPIO for Sensors
4 Way 5v Relay Module Relay Control Board With Indicator Light Relay Usb Input - Buy 4 Way Relay Module,Relay Expansion Board,Module Product on Alibaba.com
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
USB DAQ Modules
4 Channel USB Relay Module With GPIO And Analog Inputs | Numato Lab
Yocto-Relay - Tiny USB interface with two SPDT relays
USB-4761-BE, 8-ch Relay and 8-ch Isolated Digital Input USB Module - Advantech AE
1 Channel USB Relay DC 5V Programmable Module | ElectroPeak