4 Pin PWM PC Fan Controller 12V 3A with Temperature Sensor and Digital Display for Case Cooling

12V 4-wire PWM Fan Temperature Controller with Digital Temperature and Speed Display Why you need this controller - Precise and quiet fan control: Intelligent 4-wire PWM control allows exact adjustment of fan speed for better temperature management, lower noise, and energy savings. - Real-time monitoring: Built-in digital displays show both temperature and fan speed so you can see operating status at a glance. - Flexible automation: Supports automatic fan shutoff at low temperatures and reverse timing fans, reducing wear and saving power when full cooling is not needed. Key benefits and problem solving - Keeps systems cool while minimizing noise and power use by adjusting fan duty cycle rather than running fans at full speed. - Prevents unnecessary fan operation by allowing temperature-based shutdown for compatible fans, useful in low-load or standby conditions. - Small footprint and simple installation make it easy to integrate into chassis, compact systems, and retrofit projects. Main functions and standout features - 4-wire PWM control for intelligent, stable fan speed regulation and quiet operation. - Integrated digital temperature and speed readouts for real-time status monitoring. - Supports temperature-based fan shutdown for fans drawing 3 A or less and supports inverse timing fans. - Compact design for easy integration into space-constrained enclosures. - Broad compatibility with chassis air-cooling systems and standard 4-wire PWM fans. Technical specifications - Design supply voltage: DC 12V. - Operating voltage range: DC 8 to 16V (ensure power supply matches fan voltage). - Controller circuit consumption: less than 40 mA at 12V (for reference). - Fan current handling: not more than 3.5 A; temperature-based shutdown supported for fans up to 3 A. - PWM duty range: 1 to 100 percent with an accuracy of plus or minus 0.5 percent (duty refers to the control signal, not measured RPM). - PWM frequency: 25 kHz plus or minus 1 kHz. - PWM signal amplitude: 5 V (no-load). - Temperature measurement range: minus 9.9 to 99.9 degC. - Temperature measurement accuracy: within 0 to 50 degC the error is less than 1.2 degC; outside that range