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
Electronics :: Relays :: 12V USB Relay 4 Channel Programmable Computer Control
USB-RLY08C - 8 channel USB relay
DC 5V 10A 8 Channel Relay Module Micro USB Board With Indicator PC Upp – Sunhokey Electronics Co., Ltd
Relay Boards With I/O :: 8 Channel USB Relay Board W/ISO Input Port and DC Power Terminal Block
DC 5V USB Relay 2 Channel Programmable Computer Control Power Supply Module for Smart Home Controller Relay Board 250V 10A: Amazon.com: Industrial & Scientific
USB Relay Controllers with On-Board Analog Inputs and GPIO for Sensors