PWM Fan Speed Controller – Smart Temperature-Based Fan Regulation

Take full control of your cooling setup with this PWM Fan Speed Controller. Designed for 12V and 24V fans, this compact controller automatically adjusts fan speed based on the detected temperature — the warmer it gets, the faster the fan spins, and as temperatures drop, the fan slows down to minimize noise. It's an effortless upgrade for PC builds, server racks, electronics enclosures, or any DIY cooling project.

Key Features

Automatic Temperature-Based Speed Control: Fan RPM scales up and down in real time as ambient temperature changes — no manual adjustments needed.
PWM (Pulse Width Modulation) Technology: Delivers smooth, precise fan speed regulation for consistent and efficient cooling performance.
Wide Compatibility: Works with standard 12V and 24V fans, making it suitable for a broad range of electronics and DIY applications.
Easy Connection: Straightforward wiring with a stable 19.7-inch (50cm) cable — connects quickly without tools or expertise.
Adjustable Fixed Mode: Switch between automatic temperature-responsive mode and a fixed-speed manual mode to suit your specific needs.
PCB Construction: Built on a quality Printed Circuit Board (PCB) support for reliable, long-lasting performance.
Compact & Versatile: Small form factor fits easily into tight enclosures, PC cases, and custom electronics builds.

Specifications

Control Method: PWM (Pulse Width Modulation)
Compatible Voltage: 12V / 24V
Cable Length: Approx. 19.7 inches (50cm)
Material: Printed Circuit Board (PCB)
Modes: Automatic (temperature-responsive) & Fixed (manual)

Perfect For

PC case cooling optimization
DIY electronics and maker projects
Server rack and enclosure ventilation
3D printer cooling systems
Home automation and smart cooling setups

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Frequently Asked Questions

Q: How does the PWM Fan Speed Controller regulate fan speed?

A: This PWM Fan Speed Controller uses a built-in temperature sensor to automatically adjust fan speed in real time. As temperature rises, the fan spins faster to increase airflow; as temperature drops, the fan slows down to reduce noise — all without any manual input required.

Q: What fans are compatible with this fan speed controller?

A: This controller is compatible with standard 12V and 24V fans, covering a wide range of PC case fans, cooling fans for electronics enclosures, 3D printer fans, and other common fan types used in DIY builds.

Q: Can I use the fan speed controller in a fixed (manual) mode?

A: Yes! In addition to automatic temperature-based speed control, this controller also features an adjustable fixed mode, allowing you to manually set a constant fan speed to suit your specific cooling or noise preferences.

Q: How long is the cable on this fan speed controller?

A: The controller comes with a stable 19.7-inch (approximately 50cm) cable, providing enough reach for most PC cases, enclosures, and electronics builds without the need for extensions.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.