"1. The GFCI can be installed in the EVSE, but many customers feedback it will affect the normal using of the EVSE. So normal GFCI do not have GFCI;
2. There is diode protection in our EVSE;
3. Normal cable is TUV. The UL cables can be customized, but it's only suit for 16A, because 32A UL cable is too thick to fit the box."
So it sounds like GFCI is optional but it's been known to cause charging issues so it's not the norm, unless specified. Not sure if it's the same but I have GFI outlets in our basement and for the most part they are a PIA, occasionally tripping without a cause sometimes just by flipping a light switch. I wouldn't want my EVSE tripping out inadvertently in the middle of the night if I needed the charge to get to work.
Not sure what to make of the UL statement but maybe because this EVSE can go to 32a(although I had mine limited to 30a) UL listing would require the more expensive and bulky 8 gauge wire to be UL listed? Note the included cable is slightly thicker than 10 gauge but is metric, maybe UL doesn't recognize metric sizing and therefore call it 10 gauge, only capable of 30a??
Regardless I'm fine with the EVSE, it's working just great for me but I'd understand others feeling differently and for those there is something like Clipper Creek or other brands almost twice the price and less versatile than this EVSE
But it does sound like if GFCI is important to you, the mfg. can add it and it does have diode protection, sounds like adding UL would be more problematic because of the amperage of this EVSE. Of course if you wanted a slightly longer input cord than the norm(I wanted 30") that would also forgo UL listing as it won't allow more than a measly 12".