The attached JPG is a snip of the top of an auto-generated entities card on the default console. What is the purpose of the slide switch (highlighted)? On this particular card, it doesn’t appear to do anything.
The entities card has a “Show header toggle” option which gives you a toggle switch next to the card title (if there is one):
If the entities are switches it will turn them all on and off together. I agree, though, there doesn’t seem much point in your case. You should be able to edit the card and disable it.
Thanks for that. A somewhat bizarre feature, but there you go. This is an auto-generated card on the default dashboard, so I doubt that I would be able to alter it with impunity. It must default to “off” on custom dashboards - I have never noticed it there.