---
product_id: 801943825
title: "2PCS 12V PWM Fan Controller, 4-Pin PC Fan Speed Controller with Adjustable Knob, DC Motor Voltage Regulator"
brand: "giantdeer"
price: "HK$124"
currency: HKD
in_stock: true
category: "Giantdeer"
url: https://www.desertcart.hk/products/801943825-2pcs-12v-pwm-fan-controller-4-pin-pc-fan-speed
store_origin: HK
region: Hong Kong
---

# Universal 12V 4-pin compatibility for versatile setups 25kHz PWM frequency for ultra-precise fan speed Stepless rotary knob for smooth 0-97% speed control 2PCS 12V PWM Fan Controller, 4-Pin PC Fan Speed Controller with Adjustable Knob, DC Motor Voltage Regulator

**Brand:** giantdeer
**Price:** HK$124
**Availability:** ✅ In Stock

## Summary

> 🎯 Master your PC’s airflow like a pro — precise, silent, unstoppable.

## Quick Answers

- **What is this?** 2PCS 12V PWM Fan Controller, 4-Pin PC Fan Speed Controller with Adjustable Knob, DC Motor Voltage Regulator by giantdeer
- **How much does it cost?** HK$124 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/801943825-2pcs-12v-pwm-fan-controller-4-pin-pc-fan-speed)

## Best For

- giantdeer enthusiasts

## Why This Product

- Trusted giantdeer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Pack Convenience:** Two compact controllers included for multi-fan setups or future upgrades.
- • **Plug & Play Versatility:** Compatible with all standard 12V 4-pin PWM fans for effortless integration.
- • **Seamless Speed Tweaking:** Adjust fan speeds smoothly from 0% to 97% with an intuitive rotary knob.
- • **Stable & Reliable Cooling:** Consistent DC voltage output prevents jitter and ensures steady fan operation.
- • **Precision at Your Fingertips:** Experience whisper-quiet, perfectly tuned airflow with 25kHz PWM control.

## Overview

This 2-pack of 12V PWM fan controllers offers precise 25kHz frequency speed regulation for 4-pin PC fans, featuring a smooth rotary knob for stepless adjustment from 0% to 97% duty cycle. Designed for wide compatibility and stable voltage output, these compact controllers ensure reliable, jitter-free fan performance and easy installation, perfect for optimizing cooling in professional and DIY PC builds.

## Description

PWM Fan Speed Controller: 12V 4-Pin PWM PC Fan Controller with Adjustable Knob PWM Frequency: 25kHz Stable Signal Speed Range: 0%-97% Duty Cycle Adjustable Easy Installation with Compact Board Design This professional PWM fan controller enables precise speed regulation for 4-pin PC cooling fans, ensuring optimal airflow and noise control for computer builds and DIY projects. Specifications: Input Voltage: DC 12V PWM Frequency: 25kHz Duty Cycle: 0%-97% Adjustable Connector: 4-Pin PWM Standard Control: Rotary Knob with Switch Features: Precision PWM Speed Control Wide Compatibility with 4-Pin Fans Smooth Stepless Speed Adjustment Built-in Power LED Indicator Compact & Easy to Install Package Includes: 2× PWM Fan Controller Boards Ready for DIY Wiring Installation

## Features

- Precise PWM Control | 25kHz PWM signal ensures precise speed regulation for 4-pin PC fans. Delivers smooth and stable performance.
- Easy Speed Adjustment | Rotary knob combines power switch and stepless speed control. Adjust from 0% to 97% duty cycle.
- Wide Compatibility | Works with standard 12V 4-pin PWM fans. Ideal for PC case and CPU cooling systems.
- Stable Voltage Output | Reliable DC voltage regulation ensures consistent fan operation. Prevents motor jitter.
- Quick Installation | Compact design with simple wiring. Includes 2 controllers for multiple cooling setups.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FY2HGL8S |
| Best Sellers Rank | 45,877 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 173 in Motor Speed Controllers |
| Brand | Giantdeer |
| Country Of Origin | China |
| Included Components | No |
| Manufacturer | Giantdeer |
| UPC | 768274679611 |

## Images

![2PCS 12V PWM Fan Controller, 4-Pin PC Fan Speed Controller with Adjustable Knob, DC Motor Voltage Regulator - Image 1](https://m.media-amazon.com/images/I/61pWTY6Xq6L.jpg)

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**Shop now:** [https://www.desertcart.hk/products/801943825-2pcs-12v-pwm-fan-controller-4-pin-pc-fan-speed](https://www.desertcart.hk/products/801943825-2pcs-12v-pwm-fan-controller-4-pin-pc-fan-speed)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-08*