Andrey, I have the same one you linked on Alibaba (for 110 V here) which I've been using for 4 or 5 years. It doesn't have temperature controls, but it seems to be about the right temperature so it doesn't matter.. If you put a 1020 tray on top of the mat it's a bit cooler than if you put seedlings directly on the mat, but either way seems alright.
I think mine may be a bit uneven heating (hotter in the middle) so sometimes I move the trays around if I see a patch not germinating as quickly. I use cell packs that are about the same depth as a 1020 tray, and this seems to be the right amount of heat for tomatoes, peppers and other seeds fairly near the surface at that depth. I've also used it to germinate squash, they seemed to love the extra heat (being planted deeper so closer to the heat source).
What can I say? Not as fancy as the heating pads for arthritis, but seems okay for seeds.
