What you could do is to use a second sonoff to turn on the boiler and have the th10 as a measuring unit.
then you can create a scene for ex. if my thermostat is above 50deg turn boiler on thene create one scene for the turn off. Then the scenes can be running durring the period of time you want and not 24/7.
I hope I helped.
Hey many thanks for the reply.
So, keep that sonoff that controls the boiler as is, but remove the temperature sensor, get a second one that only measures temperature and use that to measure the temperature. And setup a scene where the one that controls the boiler gets triggered by the one with the temp sensor? Do I have this correctly?
Thanks very much.
Thank you :-)