Amazon affiliate - product types and commission %

So for the Amazon affiliate, electronics commission is fixed at 4%

But my question is what is counted as electronics? Because I don't find it specified in detail anywhere.

If just go by the department breakdown, it includes all appliances, musical instruments, office supplies.

Now these, normal day person might not consider them electronics. So I just want to confirm. For example, will these be fixed at 4% commission:

Electric shaver
coffee machines
vacuums
BBQ grill
All Guitars

BBQ grill seem to ok, in home outdoors.
But like vacuum is included 3 categories at least: appliances, home, industrial & scientific

Hope an experienced Amazoner can answer this.
And while you're at it, which of these products are good for promoting.

Anyone know? I know there's gotta be someone that does ...
Help a newbie out

Still waiting for an answer, so dug up thread, any one know?

Uhm, really sorry to bump this thread but I have the exact same question. What is counted as electronics? For example a portable vacuum cleaner exists in home & kitchen category but it's an electronic product. So will it be counted in the 4% fixed rate category or as per the tier / # of products you sell that goes up to 8.50%?