I remember the first microwave my father bought : it had a temperature sensor and then you just configured the temperature you wanted your drink
After several temperature sensor replacement, they broke every couple of years, the new microwave didn't had this feature but was quicker and consumed less, but I don't remember the figures as I was too young to care about...
About the leaking problem, I don't think it is a reality, but the first microwaves in France were in the 80's. You may test with a wireless network as they use the same wavelength.
Since several times I searched a microwave with temperature sensor for drinks but never found any
Denis.
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