text: We use this for my son when he sleeps. HOWEVER, whenever we set it to run all night long, it turns off about an hour later. I made sure we didn't set the timer. We even tried putting in new batteries and it still shuts out. It still shuts off. We exchanged it for a new one but it still did the same thing. I wish I could return it and get our money back since we need one to run all night.