As far as I read, these fans have the possibility to wire them up “directly” to a esp32 by using the molex plug.
Maybe check this out:
https://www.rollitup.org/t/idiots-guide-to-getting-an-esp32-to-control-ac-infinity-cloudline-ec-fans-esphome-ha.1053910/
On Reddit someone also said that he did it like this with his mars hydro fan.
Here is also a thread: Ac Infinity (S-series Fan)
(I dont have any of these fans, so no guarantees there)