{"product_id":"dc-5-30v-pwm-motor-speed-controller-digital-display-encoder-zk-mg","title":"DC 5–30V PWM Motor Speed Controller | 5A\/15A Digital Display","description":"\n\u003ch2\u003eZK-MG PWM DC Motor Speed Controller – Precise, Digital \u0026amp; Easy to Use\u003c\/h2\u003e\n\u003cp\u003eTake full control of your DC motor projects with this \u003cstrong\u003eZK-MG PWM Motor Speed Controller\u003c\/strong\u003e. Designed for hobbyists, engineers, and makers alike, this compact unit supports \u003cstrong\u003eDC 5V–30V input\u003c\/strong\u003e (compatible with 12V and 24V systems) and handles a rated current of \u003cstrong\u003e5A continuous, up to 15A peak\u003c\/strong\u003e — perfect for a wide range of DC motor applications including fans, pumps, conveyors, and automation systems.\u003c\/p\u003e\n\u003cp\u003eThe built-in \u003cstrong\u003edigital encoder knob\u003c\/strong\u003e delivers far greater accuracy and repeatability than a standard potentiometer, letting you dial in your exact duty cycle or frequency with confidence. A clear digital display keeps your settings visible at a glance, and all parameters are saved to memory even after power loss.\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 DC 5V–30V input with built-in anti-reverse polarity protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated 5A \/ Max 15A:\u003c\/strong\u003e Up to 150W maximum power output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoft Start Function:\u003c\/strong\u003e Current ramps up gradually on motor start — no sudden current spikes, extending motor lifespan\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable PWM Frequency:\u003c\/strong\u003e 1 KHz–99 KHz in 1 KHz steps (default 20 KHz, ~1% accuracy)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Duty Cycle Control:\u003c\/strong\u003e 0–100% in 1% steps; upper and lower duty cycle limits are independently configurable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Encoder Knob:\u003c\/strong\u003e Rotate clockwise to increase duty cycle, counterclockwise to decrease — more precise than a potentiometer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart\/Stop Button:\u003c\/strong\u003e Short press to start or stop the motor; external switch control also supported via STOP port (3.3V logic or switch key)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower-Down Memory:\u003c\/strong\u003e All set parameters are retained after power is removed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard 5135 Instrument Shell:\u003c\/strong\u003e ABS housing for easy panel mounting and installation\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDC 5V – 30V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e5A (Max 15A)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e150W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003ePWM Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 KHz – 99 KHz (default 20 KHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eDuty Cycle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0% – 100% (1% step)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 × ZK-MG PWM Motor Speed Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to Use the Encoder Knob\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDefault Interface (Duty Cycle Display):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cem\u003eShort Press\u003c\/em\u003e — Toggle motor start\/stop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003eLong Press\u003c\/em\u003e — Enter settings menu\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003eRotate Clockwise\u003c\/em\u003e — Increase duty cycle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003eRotate Counterclockwise\u003c\/em\u003e — Decrease duty cycle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSettings Interface:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cem\u003eShort Press\u003c\/em\u003e — Cycle through parameters: Duty Cycle Lower Limit (L__), Upper Limit (H__ \/ 100), Working Frequency (F__)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003eLong Press\u003c\/em\u003e — Exit settings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003eRotate\u003c\/em\u003e — Increase or decrease the selected parameter value\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eExternal STOP Port:\u003c\/strong\u003e Connect an external switch or apply a 3.3V logic signal to remotely toggle the motor's start\/stop state — ideal for automation and custom control setups.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-4-inch-npt-nickel-plated-brass-air-compressor-tank-fill-valve\"\u003e1\/4\" NPT Nickel Plated Brass Air Compressor Tank Fill Valve\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-shank-wire-twister-drill-attachment-rebar-tie-tool\"\u003e1\/4\" Hex Shank Wire Twister Drill Attachment | Rebar Tie Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-drive-wheel-protector-impact-socket-set-storage-case\"\u003e1\/2\" Drive Wheel Protector Impact Socket Set + Storage Case\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor further reading on electrical safety and standards for electronic components, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What voltage range does the ZK-MG PWM motor speed controller support?\u003c\/h4\u003e\n\u003cp\u003eA: The ZK-MG supports a DC input voltage of 5V to 30V, making it compatible with common 12V and 24V DC motor systems used in hobby, automotive, and industrial applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I control this PWM motor controller with an external switch?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The rear STOP port allows you to connect an external switch or 3.3V logic signal to remotely toggle the motor start\/stop state, making it ideal for custom automation and control panel setups.\u003c\/p\u003e\n\u003ch4\u003eQ: Will the settings be saved if the power goes out?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The ZK-MG features power-down memory storage, so all your configured parameters — duty cycle limits, working frequency, and more — are retained even after the unit loses power.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum current and power this controller can handle?\u003c\/h4\u003e\n\u003cp\u003eA: The controller is rated at 5A continuous current with a maximum peak of 15A, and a maximum power output of 150W. For sustained high-current applications, ensure adequate heat dissipation.\u003c\/p\u003e\n\u003ch4\u003eQ: How does the soft start function benefit my motor?\u003c\/h4\u003e\n\u003cp\u003eA: The soft start gradually ramps up current when the motor is turned on, eliminating sudden current spikes that can stress motor windings and reduce lifespan — keeping your equipment running longer and more reliably.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What voltage range does the ZK-MG PWM motor speed controller support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The ZK-MG supports a DC input voltage of 5V to 30V, making it compatible with common 12V and 24V DC motor systems used in hobby, automotive, and industrial applications.\"}}, {\"@type\": \"Question\", \"name\": \"Can I control this PWM motor controller with an external switch?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The rear STOP port allows you to connect an external switch or 3.3V logic signal to remotely toggle the motor start\/stop state, making it ideal for custom automation and control panel setups.\"}}, {\"@type\": \"Question\", \"name\": \"Will the settings be saved if the power goes out?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The ZK-MG features power-down memory storage, so all your configured parameters — duty cycle limits, working frequency, and more — are retained even after the unit loses power.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum current and power this controller can handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The controller is rated at 5A continuous current with a maximum peak of 15A, and a maximum power output of 150W. 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