Connect the product with a voltage of 12V in series and put it into the high and low temperature test chamber. After connecting the product lines, make sure that the product indicator lights are on. Raise the high and low temperature to 136℃ for 5 minutes, and make sure that all the indicators are off. Then cool down to 60℃, open the high and low temperature box to ensure that the indicator light is on. When the temperature rises to 136℃, keep it for 5 minutes, and the observation indicator light does not light up, it is qualified. Отрезать и закрепить нить
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