After the small white bear thermostat is started, press the close button to close it to prevent dry burning. According to the relevant public information inquired, after the anti-dry burning is turned on, press the close button, and the little white bear thermostat is turned off. Dry-burning prevention, that is, when the outlet water temperature or the heater temperature reaches above 95℃, the thermostat will automatically cut off the power supply and stop heating, and when the outlet water temperature or the heater temperature drops below the rated temperature, the thermostat will automatically or manually recover.