{"product_id":"gaqqee-4000w-stepless-ac-speed-voltage-controller","title":"Gaqqee 4000W Stepless AC Speed \u0026 Voltage Controller","description":"\n\u003ch2\u003eGaqqee 4000W Stepless AC Speed \u0026amp; Voltage Controller\u003c\/h2\u003e\n\u003cp\u003eTake precise control of your power tools, fans, heaters, and lighting with the \u003cstrong\u003eGaqqee 4000W Stepless AC Speed \u0026amp; Voltage Controller\u003c\/strong\u003e. This versatile electronic voltage regulator lets you smoothly adjust output voltage from 0 to 220V (EU) or 0 to 110V (US) with a simple turn of the dial — no complex wiring or programming required. Whether you need smooth fan speed regulation, temperature control for electric heaters, or dimming for incandescent bulbs, this controller delivers stable and efficient performance. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with EU (AC 220V) and US (AC 110V) electrical standards — suitable for use across diverse countries and regions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Power Capacity:\u003c\/strong\u003e Handles up to 4000W peak power (2000W resistive load), making it suitable for demanding tools such as angle grinders, drills, brushed motors, and electric furnaces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Overload Protection:\u003c\/strong\u003e Automatically cuts power during current overload, protecting both your devices and the controller from damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStepless Adjustment:\u003c\/strong\u003e Smooth, continuous knob control allows gradual increases or decreases in voltage — no abrupt jumps or steps.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlame-Retardant Casing:\u003c\/strong\u003e Constructed with high-strength, flame-retardant housing and an optimised thermal dissipation design for safe, long-term use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE \u0026amp; RoHS Certified:\u003c\/strong\u003e Meets international safety and environmental standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 220V (EU) \/ AC 110V (US)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 0–220V adjustable (EU) \/ AC 0–110V adjustable (US)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4000W peak (2000W load capacity)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10A \/ 15A (model selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, RoHS\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\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeed Control:\u003c\/strong\u003e Fans, brushed motors, power tools (without built-in speed settings)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Control:\u003c\/strong\u003e Electric stoves, ovens, water heaters, heating rods, electric blankets (non-smart, non-display models)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimming:\u003c\/strong\u003e Tungsten filament bulbs, incandescent bulbs, halogen lamps, heat lamps, light strips (not for LED energy-saving lamps with circuit boards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eBefore use, set the knob to the \u003cstrong\u003e'0' position\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eConnect the power cord to an AC 110V or 220V socket. The output voltmeter will display the voltage.\u003c\/li\u003e\n  \u003cli\u003eConnect your electrical device to the output socket.\u003c\/li\u003e\n  \u003cli\u003eSlowly turn the knob \u003cstrong\u003eclockwise\u003c\/strong\u003e to increase voltage, or \u003cstrong\u003ecounter-clockwise\u003c\/strong\u003e to decrease it.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThis controller regulates AC input\/output — it \u003cstrong\u003ecannot boost voltage\u003c\/strong\u003e, only reduce it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot suitable\u003c\/strong\u003e for smart appliances with circuit boards (e.g., induction hobs, rice cookers, standard LED lamps, domestic water pumps).\u003c\/li\u003e\n  \u003cli\u003eFor resistive loads, do not exceed \u003cstrong\u003e2000W\u003c\/strong\u003e; inductive loads max \u003cstrong\u003e500W\u003c\/strong\u003e; capacitive loads max \u003cstrong\u003e300W\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eFor appliances over 1000W, return the knob to '0' when not in use to prevent high start-up current on next activation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndoor use only\u003c\/strong\u003e — not waterproof. Keep away from wet or damp environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSpeed Controller × 1\u003c\/li\u003e\n  \u003cli\u003eHook × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eIf you enjoy working with tools and DIY equipment, check out these related products:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/bu-29mm-sinking-minnow-jerkbait-fishing-lure-bass-trout-pike\"\u003eB\u0026amp;U 29mm Sinking Minnow Jerkbait Lure – Bass Trout Pike\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/bu-soft-crawfish-bass-fishing-lure-salted-craw-bait-5-pack\"\u003eB\u0026amp;U Soft Crawfish Bass Lure – Salted Craw Bait 5 Pack\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of devices can I use with the 4000W stepless speed controller?\u003c\/h4\u003e\n\u003cp\u003eA: This controller is compatible with fans, brushed motors, angle grinders, drills, electric stoves, ovens, water heaters, electric blankets, incandescent and halogen bulbs, and heat lamps. It is not suitable for smart appliances with built-in circuit boards such as LED energy-saving lamps, induction hobs, or rice cookers.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this speed controller suitable for both US and European plugs?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Gaqqee 4000W controller is available in both European Standard (AC 220V) and American Standard (AC 110V) versions, making it compatible with electrical systems in a wide range of countries and regions.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum load I can connect to this voltage regulator?\u003c\/h4\u003e\n\u003cp\u003eA: The peak power rating is 4000W; however, connected resistive loads must not exceed 2000W, inductive loads 500W, and capacitive loads 300W to avoid damaging the unit. Always stay within these limits for safe and reliable operation.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this controller be used outdoors or in wet areas?\u003c\/h4\u003e\n\u003cp\u003eA: No. This product is not waterproof and is designed for indoor use in dry environments only. Avoid using it near bathrooms, kitchens, aquariums, or any other damp or wet locations.\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 types of devices can I use with the 4000W stepless speed controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This controller is compatible with fans, brushed motors, angle grinders, drills, electric stoves, ovens, water heaters, electric blankets, incandescent and halogen bulbs, and heat lamps. 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Always stay within these limits for safe and reliable operation.\"}}, {\"@type\": \"Question\", \"name\": \"Can this controller be used outdoors or in wet areas?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This product is not waterproof and is designed for indoor use in dry environments only. 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