As of today, 4/4/2024, this product is advertised as 'pure sine wave'. But in reality, it is in fact not. It clearly states in its instructions/user manual that it is modified sine wave. Unacceptable waste of my time.

Update: tried to return this, i had bought it with a €20 coupon from my skroutz points balance, spoke with skroutz support, they said I'd lose the coupon if i returned the product, despite it being something i earned through multiple other purchases, after paying the anual subscription for skroutz plus.
The description of the product is still not updated as of today 10/4/2024 although i let them know, and this is basically their fault for falsely advertising the product as pure sinewave when it's in fact modified sinewave.
Despite that, they said I'd lose my coupon because it's meant for 1 time use. So essentially, they'll take €20 from the original amount i paid if i return it.

I would return the machine, but I had lost the receipt.

The fan on the UPS generally works to cool the system, for a few minutes and then it opens again after a while. However, in this specific case, after contacting the company, it works permanently with a 1-minute break, which they told me is normal.

The noise is quite annoying, you won't be able to have it in the bedroom or in a neighboring room.

In terms of protection, it has caused a switch to trip for me and overall it has poor grounding.

Considering the price I bought it for, I don't think it's worth it.