Features: Advanced LCD controller with 12V/24V compatibility enables precise temperature management and real time monitoring for parking heaters, achieving 95% thermal efficiency while reducing energy consumption. Engineered with fire resistant ABS housing and high conductivity copper circuits, this professional control module ensures stable operate across 30°C to 80°C environments while preventing circuit aging. Essential for commercial truck driver transporting temperature sensitive cargo, winter adventurers in campers, and explorers requiring cabin heating solution. Maintains optimal vehicle interior temperatures during expeditions, protects electronic components in air heaters during prolonged idling, and prevents oil gelling in operate. The control board integrates failed safe protocols against voltages fluctuations, with color coded wiring terminals simplifying installation for automotive technicians. Specifications: Component: Plastic Voltagse: 12V/24V Temperature ranges: -40℃~40℃ Scope of application: for 12V/24V, 3KW/5KW/8KW parking heater Package Includes: 1 Set Parking Heater Monitoring Switches Board note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.