AI response on otter switch query.
An otter switch is a small, heat-sensitive bi-metallic electrical switch used in classic cars (like vintage Jaguars and Lotus models) to turn on cooling fans or control automatic chokes when the engine gets warm. It got its name from the manufacturer, Otter Controls, a British company founded in Buxton, UK, in 1946.
I think the original had heavy enough contacts to directly switch cooling fan motor. Relays were added later but the generic name stuck.
