Subj : Re: USB controlled mains switch
To   : Adrian
From : Joe Beanfish
Date : Tue Jan 21 2025 14:00:25

On Sat, 18 Jan 2025 23:07:50 +0000, Adrian wrote:

> I'm looking for a USB controlled mains switch (230V AC) that I can
> connect to a PI to turn a mains power supply on and off.
>
> I've done a bit of digging around on the net, and the options seem to
> fall into two categories, either a relay device which means having to
> rewire the device (which I'd rather avoid), priced around 30Euros or one
> that sits in line (between the device and the supply).  The latter
> appears to be in excess of 100Euros, which is considerably more than I
> want to pay.
>
> Any suggestions on where to look ?  I'm not interested in a wireless
> solution, as it is likely to be used in places where signals are not
> reliable.
>
> Thanks
>
> Adrian

No need to rewire the end device to use a relay controller. Just wire up
a simple intermediate between the relay and the controlled device. i.e.
add a plug and outlet to the relay. Or buy a pre-built one:

Low voltage controlled (about $40)
https://dlidirect.com/products/iot-power-relay

Ethernet controlled (about $80)
https://www.amazon.com/ezOutlet5-Internet-WiFi-Reboot-Switch/dp/B0861NX6H2/

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