There are some that make the noise when you stop it manually, I curse the family of the designers every time.

I have 2 demands for microwaves. Have a 30sec button and start when I press it once. After 1 minute of no use, just clear the time left. Also don’t beep every 10 seconds after the timer ends. I’m drunk and I probably don’t need that food if I don’t remember. That’s more than 2, so 30 demands and I’ll stop before I hit zero left.