Relay Boards With I/O :: 8 Channel USB Relay Board W/ISO Input Port and DC Power Terminal Block
USB Relay Board - High Power USB Relays for Industrial Applications
USB Relay Controller Board - 4 Channels for Home Automation
32Channel USB Relay (12V) Module (NU-RL320001)
16 Channel USB Relay Module With GPIO And Inputs | Numato Lab
Arduino 2 Channel USB Controlled 5V Relay Module
USB Relay 16-Channel 3-Amp DPDT with UXP Port: Relay Pros
8-channel programmable relay with USB connector – Techfun.sk – At least the Arduino shop
RDL Spdt USB 8 Channel Relay Board-FT245RL
usb relay controller
2 Channel 5V USB Relay Module | 10A 250V AC
2 Channel USB Relay Module
USB Relay Controllers with On-Board Analog Inputs and GPIO for Sensors
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
USB-RLY08C - 8 channel USB relay
DC 5V 10A 8 Channel Relay Module Micro USB Board With Indicator PC Upp – Sunhokey Electronics Co., Ltd
USB 4 Channel Relay Board
1-Channel USB Relay Module - 5V - ElectroPeak
Custom Firmware Teaches USB Relay Board New Tricks | Hackaday