There are also halfsize ovens, some made to fit on countertops. Special versions can be ordered for baking, broad sufficient to accommodate baking sheets by length or width. The airflow design is essential in these ovens to achieve balanced heating and browning. Computerized controls allow the oven to be programmed by recipe. Electronic sensors within the oven will slightly lengthen cooking time to compensate for temperature drops triggered if the door is opened too long or too frequently. Some versions function electric meat probes that permit three various products to be cooked at different times and temperatures.
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