{"product_id":"dc12v-3a-pwm-4-wire-fan-speed-temperature-controller-module","title":"DC12V 3A PWM 4-Wire Fan Speed Temperature Controller Module","description":"\u003ch2\u003eDC12V 3A PWM 4-Wire Temperature-Controlled Fan Speed Governor\u003c\/h2\u003e\n\u003cp\u003eTake precise control of your cooling setup with this compact \u003cstrong\u003eDC12V 3A PWM 4-Wire Fan Speed Controller\u003c\/strong\u003e. Designed for computer builds, DIY electronics projects, and custom cooling systems, this mini temperature controller module automatically adjusts fan speed based on real-time temperature readings — keeping your components running efficiently without manual intervention.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing an NTC temperature probe and a PWM (Pulse Width Modulation) output, this module intelligently regulates fan RPM in response to thermal changes. Its small footprint (48mm × 18mm × 9mm) makes it easy to integrate into tight enclosures, custom PC cases, or DIY projects where space is at a premium.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePWM 4-Wire Control:\u003c\/strong\u003e Compatible with standard 4-wire PWM fans for smooth, precise speed regulation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC 12V Operation:\u003c\/strong\u003e Recommended supply voltage of 12V (working range: 9V–14V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Fan Current:\u003c\/strong\u003e Up to 0.8A (non-overloaded) — safe for most standard PC and cooling fans\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNTC Temperature Probe:\u003c\/strong\u003e NTC 50K, B=3950, with a 50cm lead and XH-2P connector (2.54mm pin spacing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Range:\u003c\/strong\u003e Functions reliably from -20°C to +60°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact DIY Kit:\u003c\/strong\u003e Measures just 48mm × 18mm × 9mm — perfect for custom builds and tight spaces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable in Packs:\u003c\/strong\u003e Choose 1pc, 5pcs, or 10pcs to suit your project scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRecommended 12V (9V–14V working range)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Current (Controller)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFan Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin 0.8A (not overloaded)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Probe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNTC 50K, B=3950, 50cm length\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eXH-2P (2.54mm pin spacing)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48mm × 18mm × 9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIY Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Package\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× DC12V PWM 4-Wire Fan Speed Controller Module (select qty at checkout)\u003c\/li\u003e\n  \u003cli\u003e1× NTC Temperature Probe (50cm lead, XH-2P connector)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCustom PC builds and server cooling management\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and maker projects\u003c\/li\u003e\n  \u003cli\u003e3D printer cooling systems\u003c\/li\u003e\n  \u003cli\u003eEnclosure ventilation control\u003c\/li\u003e\n  \u003cli\u003eAutomotive and industrial fan regulation (within voltage range)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does this DC12V PWM 4-Wire Fan Speed Controller do?\u003c\/h4\u003e\n\u003cp\u003eA: This controller module monitors temperature via its NTC probe and automatically adjusts your PWM fan's speed accordingly. When temperatures rise, the fan speeds up; when things cool down, the fan slows — helping maintain optimal airflow efficiently and quietly in your computer or DIY project.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What type of fans is this temperature controller compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This module is designed for standard 4-wire PWM fans with a current draw of up to 0.8A. It operates on DC 12V (9V–14V range), making it compatible with most common PC case fans, cooling fans, and similar 4-wire fan setups.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How is the temperature probe connected to the module?\u003c\/h4\u003e\n\u003cp\u003eA: The included NTC 50K temperature probe connects via an XH-2P connector with a standard 2.54mm pin spacing. The probe has a 50cm lead, giving you flexibility in positioning the sensor close to the heat source you want to monitor.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I buy this controller in bulk for multiple projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This controller is available in packs of 1, 5, or 10 pieces — simply select your preferred quantity at checkout. Buying in multipacks is ideal for large DIY builds, prototyping, or stocking up for future projects.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does this DC12V PWM 4-Wire Fan Speed Controller do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This controller module monitors temperature via its NTC probe and automatically adjusts your PWM fan's speed accordingly. 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