RS232 Relay Board 8-Channel 5-Amp ProXR: Relay Pros

RS-232 2-Channel Solid State Relay Controller with Serial Interface - NCD Store

High-Power Relay Controller 2-Channel + 8 Channel ADC ProXR Lite - NCD Store

DC 12V 8 Channel RS232 Relay Board PC USB UART DB9 Remote Control Switch for PLC Smart Home Garage door Car alarm Farm Motor - AliExpress

Ethernet Relay for Windows, Linux, Mac, and any Programming Language

RS232 Relay Board 8-Channel 5-Amp ProXR Lite: Relay Pros - Missing Product Attributes

8 Channel Relay Module with LED Indicators RS232 Serial Port Remote Control Switch PLC Controller Board for Smart Homes DC 12V(With shell)

RS232 Relay Board, The ZADR81DPDTProXR_ZRS RS232 Relay Board will allow you to connect the board to the DB9 port on your computer or other device.,

RS232 Relay Board 8-Channel 1-Amp DPDT ProXR

Relay Controller 8-Channel General Purpose SPDT + 8 Channel ADC ProXR Lite - NCD Store

USB Relay Board - High Power USB Relays for Industrial Applications

Ethernet Controlled Relay 4-Channel 1-Amp ProXR: Relay Pros

RS-232 4-Channel DPDT Relay Controller with Terminal Block Interface - NCD Store

Relay Controller 4-Channel General Purpose SPDT + 8 Channel ADC ProXR Lite 4-Channel SPDT Relay Controller with 8-Channel ADC This ProXR Lite relay

Relay Controller 4-Channel General Purpose SPDT + 8 Channel ADC ProXR Lite - NCD Store

XR Expansion 8 Channel DPDT Signal Relay Controller - NCD Store