Ultra-Mini 4-Pin PWM Fan Temperature Controller: Smart Cooling for Small Spaces Introducing the MINI Controller, the ultimate compact solution for automatic 4-pin PWM fan speed control. Designed for space-constrained projects, this tiny but powerful module delivers precise, intelligent temperature regulation without sacrificing performance. Key Features: Fingernail-Sized Form Factor: 11mm x 17mm ultra-mini PCB, perfect for tight enclosures and compact builds Wide Compatibility: Works with all standard 5V/12V 4-pin PWM PC fans (not compatible with 2/3-wire fans) 343 Customizable Control Modes: Adjustable start temperature, start duty cycle, and full-speed temperature difference for personalized cooling Ultra-Low Standby Power: 10mW @5V / 25mW @12V, energy-efficient and eco-friendly High Load Capacity: Supports fan current up to 3A, suitable for most small to medium cooling fans Intuitive LED Setup: Simple button operation with clear LED indicators for easy parameter configuration Precision Temperature Sensing: Equipped with NTC 50K B=3950 thermistor for accurate real-time temperature monitoring How It Works: The module automatically adjusts fan speed based on the temperature detected by the NTC probe. When the temperature reaches your set start temperature, the fan starts at your chosen initial duty cycle. As temperature rises, the fan speed increases proportionally, reaching 100% speed at the full-speed threshold. When temperature drops below the start temperature, the fan slows and stops to save energy and reduce noise.
✅ Ultra-Compact Design for Tight Spaces Measuring only 11mm x 17mm (about the size of a fingernail), this mini PWM fan controller is perfect for compact enclosures, small PC builds, 3D printers, Raspberry Pi projects, and other space-constrained cooling applications. No bulky modules, maximum installation flexibility.
✅ Smart PWM Temperature Control Fully compatible with 5V/12V standard 4-pin PWM fans (NOT for 2/3-wire fans). Features 343 customizable control modes, adjustable start temperature (35-65℃), start duty cycle (20-60%), and full-speed temperature difference (5-50℃) to match your specific cooling needs.
✅ Low Power Consumption & Reliable Performance Ultra-low standby power: only 10mW at 5V, 25mW at 12V, minimizing energy waste. Supports input voltage 5-15V, fan current up to 3A, with stable direct input-output transmission for long-lasting, reliable operation.
✅ Easy Setup & Configuration Simple button operation with LED indicator prompts for intuitive parameter setting. No complex software required—set your desired temperature thresholds, save the configuration, and the module will automatically adjust fan speed in real-time based on NTC 50K B=3950 temperature probe readings.
✅ Wide Application Scenarios Ideal for PC case/router cooling, 3D printer hotend/bed cooling, Raspberry Pi/DIY electronics cooling, small server racks, car audio systems, and any other 4-pin PWM fan cooling projects that require automatic temperature control.