After the user enters the code, the TrueCookPlus adjusts the cooking to conform to USDA Food Safety and Inspection Service standards for food type, weight, packaging size/shape and starting state; taking into account static microwave oven variables such as wattage, cavity size, wall voltage, hot or cold oven state, elevation above sea level and standing time.
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During this test market phase, Consumer Reports selected the TrueCookPlus equipped Kenmore model #6633 as its #1 Top Rated mid-sized countertop microwave oven.
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In 2008, the first TrueCookPlus licensed microwave ovens were launched in a limited national test market beginning at Best Buy in August, then Sears in September.