You ever wonder about the cheap chinese products that cannot survive a few months even though it only had 1 simple function? This one is it. It wasn't great to begin with, it sounded more like an ultrasonic spray diffuser rather than a silent cold air diffuser and while it sprayed based on a schedule (by the way, the APP they use is hilariously underdeveloped) for a while, it stopped working in 4 months. When you contact them on troubleshooting, and they can't seem to offer any solution, their "warranty" for 12 months is to offer you $5 for compensation. Do yourself a favor, just don't trust this device or company.