Product review (2 stars): good design concept, questionable product.  UL listing not verified.
I am happy to find this item.  But I do question about the legality of this Product's UL listing.  I FEEL the manufacturer is dodging this question.  Do we really have a true UL listing or NOT?  Please answer this question straight forward.  Usually manufacturers are proud of having UL tested and labeled.  I could have buy more of this product if I can verify their UL claim.  From my engineering point of view, the design concept works very well.  I did verify some of the function, like low voltage cut-off.  It worked.  Timer at plug in is NOT as claimed.  It sometimes turn the unit right on without 3 minutes delay.  Overall this product is very questionable, wish the manufacturer can be honest about the product.