Is there an A-B switch timer out there?

I don't even know if something like this exists, or if this forum is the proper place to pose such a question and if not, apologies in advance.

Has anyone ever heard of a device that works like a regular mechanical timer, but instead of an On/Off capability, it switches power between 2 channels, A-B respectively.

TYIA

The Arduino can read buttons and activate relays. It has all sorts of timing possibilities in the code. So yes, I think it can be done. It seems a bit boring. Can you add a temperature sensor and a display to make it more fun ?

I see you have already 85 posts, so you know what the Arduino can do. I think I totally didn't understand your question. Sorry for that. Can you try again ? What do you want to switch ?

That's called a SPST switch. It's probably the most common type of switch manufactured. Most applications only need on or off so they'll simply leave one pole not connected to anything.

... or the form-C contacts on a relay.

Contact   Function
NC        A
NO        B
COM       Switched A/B

KenF: That's called a SPST switch. It's probably the most common type of switch manufactured. Most applications only need on or off so they'll simply leave one pole not connected to anything.

I think you mean SPDT

In relay form, that is "Form-C" as dlloyd said.