Anyone know of a Cat5e/RJ-45 controller for on/off switching of DC low-voltage line that Matlab can talk to?

Anyone know of a product Instrument Control Toolbox can connect to, to control a low-voltage dc signal line using Ethernet (e.g. 10Base-T, 100Base-T, or 1000Base-T) signal to switch the low-voltage dc signal on/off?

That is, the control signal from Matlab on desktop would flow through cat5e cable to RJ-45 port on a device that acts as an on/off switch to a low-voltage dc line.

For example, could Matlab (e.g. ICT) communicate with Raspberry Pi to do this? Or, any other product one could use?

[Walter Roberson]

What sort of switching rate and latency are you looking for?

I used to use some remote (ethernet) controlled AC outlets. They saved us having to go into the wiring closets to reboot misbehaving routers and ethernet switches. I would be relatively sure that similar devices exist these days, for reasonable prices.

[gkk]

Anything really, it's just turning a fan on/off. No speed requirements. Just need a really low-tech ethernet-controlled DC outlet...

[gkk]

Did the ethernet controlled AC outlet you using transmit VISA over TCP/IP? If so, I might have an application for it as well.

[Murat Belge]

Raspberry Pi can do this. You can connect a relay to one of the GPIO ports of the Raspberry Pi and send commands from within MATLAB to Raspberry Pi to turn the relay on/off. You need Simulink Support package to talk to Raspberry Pi.