PWM Fan Speed Controller 8-16V PC with Thermometer and Display

Product detailed description

This PWM PC fan speed controller with thermometer and display offers a simple way to efficiently manage cooling in your computer or other electronic projects. It allows smooth adjustment of the fan speed while providing an instant overview of the temperature via a digital display. Suitable for PC modding, DIY projects and industrial applications.

Specifications:

• Supply voltage: DC 12V
• Output voltage range: DC 8–16V (Attention! If your fan cannot handle 16V, it could be damaged by this controller!)
• Circuit self-consumption: < 40 mA (at 12V)
• Maximum fan current: 3.3 A
• PWM range: 1–100% (signal value, not actual speed)
• PWM frequency: 25 kHz (±1 kHz)
• PWM signal amplitude: 5V (no load)
• Temperature measurement range: -9.9 to 99.9 °C
• Temperature measurement accuracy: in the range of 0–50 °C error < 1.2 °C, outside this range < 2 °C
• PCB dimensions: 50 × 19 × 11 mm (L × W × H, without connectors)
• Supported fans: 2pin / 3pin / 4pin
• Display: digital LED for temperature display
• Temperature sensor: NTC

Instructions for using the PWM fan controller with display and temperature sensor:

This controller allows both manual and automatic control of PC fan speed based on the measured temperature. Thanks to the built-in display and indicators, you can monitor the current speed, temperature and fan status. It supports 2-pin, 3-pin and 4-pin fans and operates in the 8–16 V DC power range.

PWM fan control is only supported for 3 and 4-wire fans. Some 3-wire fan variants do not have a PWM input; instead, they have a tacho output. It is therefore necessary to check the specific type of fan. With a 2-wire fan, only switching the fan on and off will occur.

Connection:

• Power supply: Connect DC 12 V (range 8–16 V) to the appropriate terminals (+ and −).
• Fan: Connect to the fan output connector (max. 3.3 A).
• Temperature sensor: Plug into the sensor connector – it senses the ambient temperature and is used for automatic regulation.

Button description:

• "+" and "−": Switching between displayed data in normal mode and changing values when setting parameters (when held down, the value changes smoothly).
• "OK":
  1. Short press in running mode – manual fan speed setting (1–100 %), the setting is saved with another press.
  2. Long press in running mode – setting temperature parameters. "+" and "−" change values, "OK" switches between:
     • L** – start temperature
     • H** – full speed temperature
     • C** – shutdown temperature
     Short press "OK" after setting all parameters saves the changes.
  3. When switching on the controller with the "OK" button held down – enter the functional setting of the PWM output direction:
     • P1 – standard mode
     • P-1 – opposite signal
     Confirmation with a short press of "OK".

Detailed description of temperature parameters:

• L** (5–94 °C): The temperature at which the fan starts to gradually increase its speed.
• H** (10–99 °C): Temperature at which the fan reaches 100% and runs at full speed.
• C** (0–92 °C): Temperature for shutdown at low temperature. A value >0 activates the shutdown function – the fan stops if the temperature is below this limit and restarts when it exceeds L**. If the value is 0, the function is deactivated.

Warning: The difference between H** and L** must be at least 5 °C and the difference between L** and C** at least 2 °C. If these limits are violated during setup, the controller automatically adjusts the other values.

Display functions and LED indicators:

• Three-digit display: Displays speed (×10), current temperature or set values.
• LED “X10 RPM”: When lit, the display shows the fan speed (256 = 2560 rpm).
• LED “C”: When lit, the display shows the current temperature.
• LED “RUN”: Lights up when the fan is on, turns off when the fan is off.

Package contents:

• PWM fan speed controller with display
• NTC temperature sensor

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.