Product review (4 stars): Nice looking, quiet, efficient
1. The usage of the switches are very unconventional, inconvenient to use.
2. The switches are very insensitive, each switch requires a few repeating touches or hold and press for a few seconds to activate.
3. The installation/user guide is poorly structured, need to read the user guide many times to manage to figure out how those switches work. If this product wasn't this big and heavy, I would have returned it already.
4. The remote control is not helpful at all, needs to be close to to the sensor on the hood and aim at certain angel.
With these issues, I still keep the product, because it does looked nice, on the other hand, it's too heavy to return.

Update:
I have the hood for almost one year. It's been working very well. It's quiet and very efficient. I am adding one more star.