[crb3]

Except for (the complicated mechanical mess that is) Black & Decker, the cheap ones I've encountered don't have any one-time-only control mechanism, they just cycle the thermostat if left on long enough, which means the heating element is powered long enough to pop the thermostat again. Then they put thermal fuses in to deal with any heat buildup.

[Isthatablackgsd]

I have a Black & Decker one, it have 2-hours shut off. My previous maker is Mr. Coffee and it have 4 hours shut off.

The only I know that consumer coffee maker don't have the auto shut off is the one that have a rocking switch and they are normally the most basic kind ($10 - $30 USD).