Wide Voltage Compatibility: This control board and LCD switch kit is designed for 12V and 24V air heaters, compatible with most common car, truck, RV, and marine parking heater systems. It is ideal for replacing or aging control units. Complete Control Kit: The kit includes an LCD switch, main control board/main board, and remote control. It provides a complete operation and upgrade solution for your parking heater without the need to purchase multiple separate components. Easy Operation with LCD Display: The integrated LCD display clearly shows operating status, temperature, voltage, and error codes. The simple button layout allows for easy adjustment of temperature, timer, and fan settings, even in low-light conditions. Suitable for Car Parking Heaters: Designed for common diesel parking heaters in cars, trucks, campervans, RVs, and marine vehicles. This product is an ideal replacement when the original switch, controller, or main board is or malfunctioning. Comfortable Heating Control: Accurate temperature settings and convenient timer function provide stable warm air, allowing you to enjoy a comfortable interior environment even in winter. Suitable for long-distance driving, overnight parking, camping, and working in cold environments. Color: As Shown Material: ABS Package Contents: 1 * motherboard 1 * switch 1 * remote control