{"product_id":"em50sp-3960w-sine-wave-controller-ip67-72v-pc-programmable","title":"EM50SP 3960W Sine Wave Controller – 72V IP67 PC Programmable","description":"\n\u003ch2\u003eEM50SP 3960W Electric Motorcycle Sine Wave Controller – VOTOL ECU, IP67 Water Resistant\u003c\/h2\u003e\n\u003cp\u003eTake your electric motorcycle or e-bike build to the next level with the \u003cstrong\u003eEM50SP 3960W Sine Wave Controller\u003c\/strong\u003e. Engineered for compatibility with QS hub and medium drive motors, this advanced ECU delivers smooth, efficient power delivery with PC programmability, a robust 72V system, and IP67-rated water resistance — built to perform in any condition.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Motor Compatibility:\u003c\/strong\u003e Designed to work seamlessly with QS wheel hub motors and QS medium drive motors for strong, reliable performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Function Support:\u003c\/strong\u003e Compatible with Hall plug, reverse drive, brake, low-speed voltage control (0V), throttle (0–5V), and high brake at 12V.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePC Programmable:\u003c\/strong\u003e Features a dedicated program port and motion model support — customize settings for parking mode, anti-theft, and magnetic flux attenuation current directly from your PC.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e Achieves up to 92% maximum efficiency with a 170% flux weakening ratio, effectively enhancing motor speed and overall power output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP67 Water Resistant:\u003c\/strong\u003e Fully protected against dust and water immersion, making it ideal for all-weather electric vehicle builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified:\u003c\/strong\u003e Meets CE safety and quality standards for reliable, compliant use.\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\u003eItem Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eECU Sine Wave Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum DC Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoost DC Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Phase Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e190A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3960W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMOSFET Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 FET\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMatched Motor Rated Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e800W – 2000W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e92%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater Resistance Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlux Weakening Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e170%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHall Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplicable Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectric Motorcycle, Electric Cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × EM50SP Sine Wave Controller\u003c\/li\u003e\n  \u003cli\u003e3 × Wiring Harnesses\u003c\/li\u003e\n  \u003cli\u003e5 × Large Screws\u003c\/li\u003e\n  \u003cli\u003e4 × Small Screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou Might Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-nut-bolt-extractor-tool-kit-10-piece\"\u003e10-Pc Hex Nut \u0026amp; Bolt Extractor Kit 9–19mm | HIP Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel\"\u003e1\/2\" Drive 8-Piece Hex Short Socket Set – Vanadium Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What motors is the EM50SP 3960W Sine Wave Controller compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The EM50SP is specifically designed for compatibility with QS wheel hub motors and QS medium drive motors, making it a strong match for most QS motor-based electric motorcycle and e-bike builds with rated power between 800W and 2000W.\u003c\/p\u003e\n\u003ch4\u003eQ: What does IP67 water resistance mean for this controller?\u003c\/h4\u003e\n\u003cp\u003eA: IP67 means the controller is fully protected against dust and can withstand temporary immersion in water up to 1 meter for 30 minutes. This makes it highly durable and suitable for outdoor riding in various weather conditions.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I program the EM50SP controller?\u003c\/h4\u003e\n\u003cp\u003eA: The EM50SP features a dedicated PC program port. You can connect it to a computer and use compatible software to customize settings such as motion model, parking mode, anti-theft features, and flux attenuation current parameters to suit your specific build requirements.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the operating voltage of this sine wave controller?\u003c\/h4\u003e\n\u003cp\u003eA: This controller operates on a 72V battery system, with a maximum DC current of 55A, a boost DC current of 60A, and a peak phase current of 190A, delivering up to 3960W of maximum power.\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 motors is the EM50SP 3960W Sine Wave Controller compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The EM50SP is specifically designed for compatibility with QS wheel hub motors and QS medium drive motors, making it a strong match for most QS motor-based electric motorcycle and e-bike builds with rated power between 800W and 2000W.\"}}, {\"@type\": \"Question\", \"name\": \"What does IP67 water resistance mean for this controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"IP67 means the controller is fully protected against dust and can withstand temporary immersion in water up to 1 meter for 30 minutes. 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