EC Buying 2Pcs DC 12V 4-Wire PWM Fan Speed Control Module, Automatic Temperature Controller Board with Sensor Input, 3A Output for PC Cooling Fan and Thermal Management Systems

EC Buying 2Pcs DC 12V 4-Wire PWM Fan Speed Control Module, Automatic Temperature Controller Board with Sensor Input, 3A Output for PC Cooling Fan and Thermal Management Systems

• This control module automatically adjusts fan speed based on measured temperature. When temperature increases, the PWM output duty cycle rises to increase airflow. At low temperatures, the fan speed is reduced or stopped, supporting efficient thermal management.
• Compatible with standard 4‑wire PWM fans using a 25kHz, 5V control signal. The module regulates fan speed through PWM control while maintaining a constant supply voltage, ensuring stable and responsive fan operation.
• The module operates from a 12V DC power supply and supports fan current up to 3A. It is suitable for single high‑power fans or multiple low‑current fans connected in parallel within rated limits.
• Supports temperature measurement from approximately −9.9°C to 99.9°C using an external temperature sensor. Measurement accuracy is suitable for general thermal control applications in electronic enclosures and cooling systems.
• Compact PCB layout with clearly labeled terminals allows easy installation and wiring. Suitable for PC cooling systems, equipment enclosures, power electronics cooling, and other applications requiring automatic fan speed control.