Temperature reporting device that I can telephone and remotely obtain the temperature at its location
I want to make a temperature reporting device that I can access remotely by telephoning to its location and obtaining the temperature at the location of the device. I already have ability to phone and turn heat on/off. I asume I will neet a digital thermonator . Accurate temp. is not required, just enough to know that heat is working properly and that freezing conditions do not exist, or are near.