Features: 1.Durable Material: This parking heater controller switch is made of ABS material for high durability. Its high strength design ensures long term use without damage, and the surface is smooth and burr free. 2.Humanized Design: This diesel heater controller is equipped with a knob switch, which supports timing start or stop, use the knob to set the time quickly. Push the on button, turn the off button, dial it to the right for hotter, left for cooler. 3.Wide Applications: The parking heater controller switch is suitable for 12V 24V power supply voltage and can be widely used in various vehicles, including cars, trucks, ships, etc. The original switch can be directly replaced. 4.Reliability and Stability: This controller switch adopts reliable electronic components and stable circuit design to ensure reliable performance and stable operation. It can reliably control the start and stop of the parking heater. 5.Easy Operation: With the parking heater knob switch, you can easily control the heating temperature, practical and easy to install. You can directly replace damaged parts and improve the efficiency of the car. Specification: Item Type: Heater Controller Knob Switch_x000D_ Material: ABS_x000D_ Number Of Ports: 3 Pins_x000D_ Supply Voltage: DC12V 24V_x000D_ Application Type: Can be used to refurbish damaged control switches_x000D_ Characteristic: Knob to adjust the size, with switch and stop button, one button control, precise and fast_x000D_ Applicable: Common to most triangular three wire plug heaters, suitable for cars, boats, trucks, RV, etc.