Would this refer to a person who controls things, or a control device, or both?
Thanks! I thought that was probably the case in context but just wanted to be sure as the word was earlier implied to be an inanimate object, and Duolingo courses do sometimes have some pretty surreal sentences!
Most likely a person because the verb is most likely associated with a lifeform that sleeps. Though, perhaps in some rare situation, someone might try to describe a standby mode of a device that controls something, as "sleeping".