Is it possible to make a T1 US to control another switch? I mean, On T1 on one wall and other switch in another place, controlling it by wifi or other way?
Yes, you can use a "scene" and set 4 rules, for example:
When switch 1 turn on, turn on switch 2
When switch 1 turns off , turn off switch 2
when switch 2 turns on, turn on switch 1
when switch 2 turns off, turn off switch 1
Then you connect a lamp to only one of them and you will have a combined light, being able to turn the lights on or off from either switch.