Switch

On or off, applied the moment it moves. A native checkbox with a ridged thumb in a slot that lights green when on.

Flip it with a click or Space. The slot lights because the thing is on.

• Wrap the words and the switch in one <label class="tui-choice"> so the text names it and the whole row is clickable.
• In a table, where there is no room for words, give it an aria-label that names the thing it powers: “Heat pump power”.
• On is also the thumb’s position, not only the green slot.