What effect does child lock function have?

The computer refrigerator with touch screen basically contains the function of child lock. Child lock can avoid children's disorderly press to change the setting of refrigerator at home, causing unnecessary damage and danger. In the child lock mode, all the key operation is invalid.
Methods to unlock the child lock:
1. Long press the temperature zone key for 3 seconds when some models are on the screen;
2. Press the unlock button for 3 seconds to unlock some models;
3. Press the refrigerate and freeze keys for 3 seconds to unlock some models;
4. Different models and slightly different operations, please check the instructions for verification.