There is an exclamation mark in the triangle, which is a common sign in household appliances and computers. At first, it appeared as a traffic sign and was set at other dangerous road locations that other warning signs could not contain, reminding drivers to drive carefully and pay attention to road conditions, thus reminding drivers to pay attention to road traffic conditions.

With the development of science and technology, various household appliances and computers have become popular, and this sign has evolved into an alarm light sign. If this sign appears in the computer device manager, the hardware is faulty. This indicator light on your refrigerator is always on, indicating that the refrigeration equipment of the refrigerator is out of order. You may need to add some freon. When there is enough freon, the light will go out automatically.