Product review (5 stars): Incredible Value with Interesting / Borderline Quirky Button Sequencing
Awesome item, great value for the money, excellent customer support.  I installed this in vented mode.  Works great.  Some of the reviews question its suction in non-vented mode, but it's been my experience that non-vented fans simply don't work that great.  Had some questions during installation, and felt I had a whole team behind me when I contacted the seller.  Stellar, A+ customer service.  There are 3 levels of fan power.  Each level has its own button to turn the fan on, but does not turn the fan off.  The power button, if pressed just once, turns off whatever fan power level you're in after exactly one minute.  Pressing the power button twice turns the fan off immediately.  The light simply turns on and off with the light button and is completely separate from the fan on/off buttons.  The light does not have varying degrees of brightness, but haven't missed having this feature.  (Although I did tend to use the low light mode of previous range hoods as a nightlight, which I don't do with this one as it's definitely bright.)  At times I'll have this light as the only one on in my kitchen.  Creates a nice effect.  Note; I bought and installed mine back in August of 2016, so can only attest to its features at that time.  That said, I genuinely wanted to share with the Amazon community how happy I am with this purchase even after a year of use.  It looks and holds up like a way more expensive model, and is well worth getting used to the buttons.