{"product_id":"pwm-fan-temperature-speed-controller-4-wire-dc-12-48v","title":"4-Wire PWM Fan Temperature Speed Controller DC 12–48V","description":"\n\u003ch2\u003ePWM Fan Temperature-Controlled Speed Controller – DC 12–48V, 4-Wire\u003c\/h2\u003e\n\u003cp\u003eTake full command of your industrial or computer cooling fans with this precision \u003cstrong\u003e4-Wire PWM Fan Temperature Speed Controller\u003c\/strong\u003e by Gaqqee. Designed for wide-voltage operation (DC 11–55V), this compact module automatically adjusts fan speed based on real-time temperature readings — keeping your equipment running efficiently and quietly. Compatible with standard 4-wire EBM fans and high-voltage EC fans using 10V PWM control signals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Operates on DC 11–55V, suitable for a broad range of industrial and computer fan applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual PWM Frequency:\u003c\/strong\u003e Selectable 20kHz or 2.5kHz (±2%) output frequency for compatibility with various fan types.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Temperature Control:\u003c\/strong\u003e Measures from -9.9°C to 99.9°C with accuracy better than 1.2°C (within 0–50°C range).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEC \u0026amp; EBM Fan Compatible:\u003c\/strong\u003e Supports common 4-wire EBM fans and standard high-voltage EC fans via 10V PWM signal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-Temperature Shutdown:\u003c\/strong\u003e Automatically cuts fan power via PWM disengagement or relay-extended power cut-off when temperatures fall below a set threshold.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-Digit LED Display:\u003c\/strong\u003e Clearly shows fan RPM, current temperature, and operating status at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual Speed Override:\u003c\/strong\u003e Directly set fan speed between 5–100% with a simple button press for fixed-output control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Operating current under 0.1A — energy-efficient and board-friendly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFan Alarm Output:\u003c\/strong\u003e Alarm signal port outputs a low level if the fan malfunctions during a run state.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 11–55V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.1A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFan Current Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5A (board connector; higher loads require direct power wiring)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePWM Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20kHz or 2.5kHz (±2%)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePWM Signal Amplitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.5V (no-load)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-9.9°C to 99.9°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1.2°C (0–50°C); \u0026lt;2°C outside that range\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTQFP Module\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 controller + 1 probe cable\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGaqqee\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eButton Controls at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e'+' \/ '–' Buttons:\u003c\/strong\u003e Switch display modes during operation; adjust parameter values in setup mode (long press for rapid adjustment).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e'OK' Button – Short Press (during operation):\u003c\/strong\u003e Enter fixed manual speed output mode (5–100%). Press again to save and exit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e'OK' Button – Long Press (during operation):\u003c\/strong\u003e Enter temperature parameter settings. Configure acceleration temperature (L**), full-speed temperature (H**), and shutdown temperature (C**) in sequence.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e'OK' Button – Power-On Hold:\u003c\/strong\u003e Access function settings to configure PWM frequency (F20 \/ F2.5) and PWM output direction (forward \/ reverse).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTemperature Parameter Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAcceleration Temperature (L**):\u003c\/strong\u003e Range 5–94°C. Fan speed increases proportionally above this threshold.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-Speed Temperature (H**):\u003c\/strong\u003e Range 10–99°C. Fan runs at 100% PWM output at or above this value.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShutdown Temperature (C**):\u003c\/strong\u003e Range 0–92°C. Fan shuts down below this temperature when set above 0; setting to 0 disables low-temperature shutdown.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Acceleration and full-speed temperatures must differ by at least 5°C. Shutdown and acceleration temperatures must differ by at least 2°C. The controller automatically adjusts related parameters if thresholds are breached.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eLED Display Indicators\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eX10 RPM:\u003c\/strong\u003e When lit, multiply the displayed value by 10 to read actual fan RPM (e.g., display \"256\" = 2560 RPM).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e℃:\u003c\/strong\u003e When lit, the display shows the current temperature from the sensor probe.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRUN:\u003c\/strong\u003e Illuminates when the fan control signal is active; extinguishes during low-temperature shutdown.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4-Wire PWM Fan Speed Controller Module × 1\u003c\/li\u003e\n  \u003cli\u003eProbe Cable × 1 (style optional)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more workshop and DIY tools? Check out our \u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e and our \u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle | Beads \u0026amp; Crafts\u003c\/a\u003e for your workbench organisation needs. Keep components tidy with the \u003ca href=\"\/products\/vintage-baroque-embossed-metal-decorative-tray-jewelry-organizer\"\u003eVintage Baroque Embossed Metal Tray – Jewelry \u0026amp; Decor Organizer\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What fan types are compatible with this PWM fan speed controller?\u003c\/h4\u003e\n\u003cp\u003eA: This controller is compatible with standard 4-wire EBM fans and high-voltage EC fans that use a 10V PWM control signal. It supports both 20kHz and 2.5kHz PWM frequencies, making it suitable for a wide range of industrial and computer cooling fans.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What voltage does the PWM fan temperature speed controller require?\u003c\/h4\u003e\n\u003cp\u003eA: The controller operates on a supply voltage of DC 11–55V (circuit operating voltage), making it highly versatile for various industrial and computer system setups.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the low-temperature fan shutdown feature work?\u003c\/h4\u003e\n\u003cp\u003eA: When the shutdown temperature (C**) is set to a value greater than 0, the controller will automatically stop the fan — cutting both the PWM signal and relay output — when the measured temperature drops below that threshold. The fan will restart and resume speed control once the temperature rises above the set acceleration temperature again. Setting shutdown temperature to 0 disables this feature entirely.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I manually set the fan speed without relying on temperature control?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. A short press of the OK button during normal operation enters the fixed manual speed output mode, allowing you to set fan speed anywhere between 5% and 100% independently of temperature readings. Press OK again to save and return to automatic temperature-based control.\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 fan types are compatible with this PWM fan speed controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This controller is compatible with standard 4-wire EBM fans and high-voltage EC fans that use a 10V PWM control signal. It supports both 20kHz and 2.5kHz PWM frequencies, making it suitable for a wide range of industrial and computer cooling fans.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage does the PWM fan temperature speed controller require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The controller operates on a supply voltage of DC 11–55V (circuit operating voltage), making it highly versatile for various industrial and computer system setups.\"}}, {\"@type\": \"Question\", \"name\": \"How does the low-temperature fan shutdown feature work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"When the shutdown temperature (C**) is set to a value greater than 0, the controller will automatically stop the fan — cutting both the PWM signal and relay output — when the measured temperature drops below that threshold. The fan will restart and resume speed control once the temperature rises above the set acceleration temperature again. 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