This fan controller is a versatile upgrade or replacement for existing ones, compatible with both 12V and 24V electrical systems. It offers precision temperature control with an adjustable range from 104°F to 230°F (40°C to 110°C) and a real - time digital display. With dual fan management, it can operate one or two fans, and Fan 2 starts with a 10 - second delay to reduce current surge, enhance cooling performance and prevent circuit overload. Installation is smart and easy, thanks to labeled, color - coded wiring, detailed instructions, built - in support for A/C override and manual toggle switch integration, as well as an upgraded sensor cable for better accuracy and durability. The controller is built with high - quality, water - resistant materials to withstand dust, heat and vibration, and serves as a direct replacement for # 0444 / DC0444 / DC - 0444.