If the air outlet is blocked by the goods or too close to the goods, it will not only affect the storage temperature of the goods, but also affect the normal operation of the refrigerating unit.

The temperature probe is installed at the air outlet, which can constantly determine the temperature of the air outlet.

In winter, the vent is shut down. By the greenhouse effect, the air in inter layer is heated and temperature at internal surface increases, and then energy-saving effects is achieved.