1、PARAMETER: Voltage and current: AC250V 16A; Electrical strength: AC1800V 0.5MA 1MIN; Temperature range: 50 to 300℃, tolerance: ±1.5 to 15℃. 2、WORKING PRINCIPLE: Use the principle of liquid thermal expansion to drive the contact to disconnect and connect through the mechanical structure, so as to achieve temperature control. 3、HIGH ACCURACY: Our temperature control knob switch has high accuracy, fast temperature sensing, reliable and crisp action, and long service life. 4、AUTOMATIC RESET: The thermostat knob can be reset automatically, and the operation is more convenient. 5、WIDELY USED: This control knob can be used for various electric heating appliances, such as electric water heater, oven, fryer, electric heater, etc.