When living in japan my apartment came with this microwave that wasn’t smart by any means, but had like 50 buttons and I only ever had to use one of them. The

When living in japan my apartment came with this microwave that wasn’t smart by any means, but had like 50 buttons and I only ever had to use one of them. The Start button. It would start heating and I would guess there was a temperature sensor that would automatically stop the thing once the food was hot. In a case it was not hot enough, you would press the same button again and it would go on again for another 20 sec or so. Brilliant.