Safe. The heating plate only has a heating function, and it needs to be equipped with a control unit to control its work, so as to protect its safe use from being scalded. The main control part of the heating plate is the thermostat. When the temperature exceeds the safe temperature, the thermostat will automatically turn off the power supply. When the temperature drops to a safe temperature, the thermostat will be energized and the heating plate will continue to heat. The temperature controller can effectively protect the heating plate from overheating and scalding.