4-Channel 12V Modbus RTU RS485 Relay Board – UART Control For PLC, LED, PTZ Cameras

DIY and automation pros, this one's for you.

This is a 4-channel, 12V relay board that communicates via Modbus RTU over RS485.

You can also control it via PC UART.

It's a versatile little board perfect for controlling lamps, LEDs, or even a PTZ camera in your automation projects.

Whether you're integrating it with a PLC or building a custom control system, this relay board gives you four reliable switching channels.

It's an unbranded, universal unit, but it gets the job done.

If you need to switch things on and off remotely or automatically, this is a solid, cost-effective component for your next build.