24V relay control remotely by temperature sensor?

Hello, i want to control my air conditioning using a temperature sensor i can put anywhere in my home and move as need.For the control of the air conditionning, it is a 24V relais which is need. Are spending hour try to find this, i gave up. Is anyone has a solution for this. This would help me a lot. Thank,

So you have a ST hub and, if so, which one?

Not sur what is a ST Hub. Currently the air conditioning is controlled by a mechanical thermostat fixed on the wall). I was looking for something like this Link.

But it is designed for heat and not cooler, so i expected some unforeseen difficulty.

Wi-Fi devices do not directly integrate with ST. If the device manufacturer supports a cloud to cloud integration, like Tuya Smart Life, it may work with ST.