Advanced Fan Speed Regulation: This 4-wire temperature-controlled fan speed regulator automatically adjusts fan speeds based on real-time temperature data. The digital display provides current temperature and fan RPM, optimizing cooling performance and energy efficiency. High RPM Compatibility: Displaying RPM in increments of 100, this controller supports up to 30,000 RPM, making it ideal for high-performance industrial fans. Its clear display ensures easy monitoring of fan speeds in demanding applications. Dual Control Modes: Offering both manual and automatic fan speed adjustments, this controller caters to diverse cooling requirements. Whether it's user-driven control or smart automation, adapt seamlessly to any cooling scenario. Precision Temperature Monitoring: Equipped with a 42cm temperature probe, this fan controller ensures precise temperature readings. The extended probe length allows for strategic placement near critical components, enhancing thermal regulation. Compatibility Note: Designed specifically for 4-wire PWM fans, this controller uses a 25KHZ 5V PWM signal and requires the fan's voltage to match the working voltage. It is not suitable for 2-3 wire fan speed regulation. Color: Black Material: plastic Package Contents: 1 x Controller 1 x Probe Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.