Product review (1 stars): Update... Stopped working. Terrible customer support
I would give a negative review if possible.  I bought two and they both stopped working after a months.  I contacted knox and was told to clean it and unplug it.  I bought the extended warranty and when contacted that company i was told I had to cal Knox because the manufacturers warranty was still in effect. Knox never contacted me after telling me to clean and unplug. So I have what amounts to a very expensive paper weight. Thankfully Amazon stepped in and let return it to them.  DO NOT buy this product.