--- product_id: 801943825 title: "2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan" brand: "giantdeer" price: "₹ 240" currency: INR in_stock: false url: https://www.desertcart.in/products/801943825-2pcs-12v-pwm-4pin-fan-speed-controller-adjustable-knob-speed store_origin: IN region: India --- # 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 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan **Brand:** giantdeer **Price:** ₹ 240 **Availability:** ❌ Out of Stock ## Summary > 🎯 Master your PC’s airflow like a pro — precise, silent, unstoppable. ## Quick Answers - **What is this?** 2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan by giantdeer - **How much does it cost?** ₹ 240 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/801943825-2pcs-12v-pwm-4pin-fan-speed-controller-adjustable-knob-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 | 163,853 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 642 in Motor Speed Controllers | | Brand | Giantdeer | | Customer Reviews | 4.0 4.0 out of 5 stars (1) | | Display Type | Knob | | Included Components | No | | Manufacturer | Giantdeer | | Manufacturer Part Number | BS171-ZL-UK-LSH | | Model Number | BS171-ZL-UK-LSH | | Number of Items | 1 | | Number of Packs | 2 | | UPC | 768274679611 | | Unit Count | 2.0 count | ## Product Details - **Brand:** Giantdeer - **Display type:** Knob - **Number of Packs:** 2 - **UPC:** 768274679611 - **Unit count:** 2.0 count ## Images ![2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan - Image 1](https://m.media-amazon.com/images/I/61pWTY6Xq6L.jpg) ![2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan - Image 2](https://m.media-amazon.com/images/I/41rC+kZ7YSL.jpg) ![2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan - Image 3](https://m.media-amazon.com/images/I/41UHe9S5opL.jpg) ![2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan - Image 4](https://m.media-amazon.com/images/I/51ywQVsSCbL.jpg) ![2PCS 12V PWM 4pin Fan Speed Controller, Adjustable Knob Speed Regulator, 25kHz Frequency,USB Compatible DC Motor Speed Controller Module, Compatible with PC Case/CPU Cooling Fan - Image 5](https://m.media-amazon.com/images/I/41+M1pc+tFL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/801943825-2pcs-12v-pwm-4pin-fan-speed-controller-adjustable-knob-speed](https://www.desertcart.in/products/801943825-2pcs-12v-pwm-4pin-fan-speed-controller-adjustable-knob-speed) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-11-10*