1. s with guaranteed quality 2. Product appearance is exquisite and compact 3. Supports low temperature shutdown of fans within 3A, can directly turn off the fan power, and supports backward sequential fan operation 4. The product wiring is simple and convenient 5. Supports four-wire fan speed regulation Design power supply voltage: DC12V Voltage range: DC8-16V (please note the fan voltage range for the working voltage of the circuit) Circuit consumption: less than 40mA (tested under 12V) Fan current: no more than 3.3A PWM range: 1-100 (signal percentage, not actual speed, accuracy 0.5%) PWM frequency: 25kHz (±1kHz) PWM signal amplitude: 5V (no-load) Temperature measurement range: -9.9 to 99.9°C Temperature measurement error: within 0-50°C, error is below 1.2°C; in other ranges, error is below 2°C Matters needing attention: 1. This controller only supports speed adjustment for four-wire fans using standard PWM signals. The signal specification is 25kHz, 5V, compatible with conventional chassis, CPU, and many server four-wire fans. It cannot control the speed of 2- or 3-wire fans. 2. The difference between acceleration temperature and full speed temperature must not be less than 5°C. The difference between shutdown temperature and acceleration temperature must not be less than 2°C. If parameter changes violate these temperature differences, the device will automatically adjust the other parameters accordingly. Color: Black Material: Plastic + Metal Package Contents: 1 x PWM Fan Temperature Controller 1 x Temperature Probe Note: Light reflection and different displays may cause the color of the item in the image to appear slightly different from the actual product. Measurement error allowance is +/- 1-3cm.