Your very popular Kasa range (which I highly recommend) needs a temperatures sensor. 

Please either build a sensor into your 105/115 sockets directly or create a something like the SwittchBot Meter.

I have sockets controlling electric heaters in my home, I can only turn on/off with timers but it needs to be by temperature. 

If you already provide a way to turn your sockets on/off via temperature in your Kasa app (a very good app by the way) please can you tell me how to do it?

Many thanks