Taikuwu PC Fan Governor, DC 12V Four Wire Thermostat PWM Speed Controller Governor Module for

✔️ 4-Pin PWM Exclusive Control - Specifically designed for standard 4-pin chassis/CPU fans (not compatible with 2/3-wire fans), delivers 20%-100% PWM range for optimal airflow management ✔️ Dual Control Modes - Seamlessly switch between manual speed adjustment and auto temperature control (35℃-90℃ range) with ±3% accuracy ✔️ Intelligent Failure Alert - Integrated buzzer with LED indicators instantly warns when fan stops (alarm auto-resets upon rotation recovery) ✔️ Smart Thermal Protection - Maintains 40% minimum speed below threshold, automatically boosts to 100% when exceeding preset temperatures ✔️ High-Capacity Performance - Supports up to 4A per channel (9A total) with 50K B=3950 thermal sensor for reliable PC cooling solutions