Better yet you can buy a thermostat that uses battery to switch the contacts and thus no second transformer the only downfall is the battery changes every couple years on that.
It is not hard to do but be sure to turn off the power before you do it.
Novellachi
https://top5247.myhvac.pw/map35.php
Laurel Maxwell is a study Continuing Education and Summer Sessions from Soesterberg
Laurel Maxwell is a study Continuing Education and Summer Sessions from Soesterberg