Features: 1. High quality, compatible with 12V/24V, 5KW-8KW systems 2. Quickly preheats air in the cabin after hot start 3. Low power consumption; ideal for long-term parking (8 watts, equivalent to the energy usage of a small indicator light) 4. Low fuel consumption (0.1 liters per hour) 5. Adjustable cabin temperature setting 6. Wide control range with very low power consumption compared to similar products on the market 7. Stepless adjustment of cabin temperature 8. Effectively reduces noise through blower speed control 9. Optional internal or external installation 10. Real-time function monitoring 11. Maintenance-free design with easy maintenance access Specifications: Type: Parking heater control motherboard Compatible: 12V, 24V, 5-8KW air heater Material: Plastic Color: Black + Green Package Contents: 1 x Parking heater control motherboard Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error allowed is +/- 1-3 cm.