PWM DC Motor Speed Controller 5V–35V 90W LED Dimmer Module
PWM DC Motor Speed Controller 5V–35V 90W LED Dimmer Module
PWM DC Motor Speed Controller & LED Dimmer Module
Take precise command of your DC motors and LED lighting with this compact, high-efficiency PWM Motor Speed Controller. Whether you're building a DIY electronics project, automating a fan, or fine-tuning conveyor belt speeds, this stepless speed regulator delivers smooth, accurate control from a single potentiometer knob — no complex wiring or programming required.
Made in Mainland China.
Key Features
- Precise Stepless Speed Control: Adjustable PWM duty cycle from 1%–100% lets you dial in exactly the motor speed or LED brightness you need — no jumpy steps, just smooth, continuous control.
- Wide Voltage Compatibility: Works across a DC 4.5V–35V input range, making it compatible with 5V, 12V, 24V, and other common power supplies.
- High Power Output: Handles up to 90W maximum output power with a 0–5A output current range — capable of driving a wide variety of DC motors and LED loads.
- Built-In Protection: Equipped with reverse polarity protection, overcurrent protection, and a self-recovering (auto-reset) fuse for safe, worry-free operation.
- Reversible Motor Direction: Easily switch motor rotation direction when the default direction doesn't match your setup requirements.
- Ultra-Low Standby Draw: Quiescent current of only 7µA in standby — virtually zero idle power consumption.
- Compact & Lightweight: At just 30×26×14 mm and 14g (without handle), it fits neatly into tight enclosures and custom builds.
- LED Dimmer Ready: Also functions as a smooth LED dimmer for 12V and 5V LED strips, spotlights, and other DC lighting.
Technical Specifications
| Working Voltage | DC 4.5V – 35V |
| Output Current | 0 – 5A |
| Max Output Power | 90W |
| PWM Duty Cycle | 1% – 100% |
| PWM Frequency | 20 kHz |
| Quiescent Current | 7 µA (standby) |
| Dimensions | 30 × 26 × 14 mm / 1.18 × 1.02 × 0.55 in (without handle) |
| Weight | 14g |
| Protection | Reverse polarity, overcurrent, self-recovering fuse |
| Country of Origin | Mainland China |
What's in the Box
- 1× PWM Motor Speed Controller Module (per unit; available in multi-packs of 5–20 pcs)
Common Applications
- DC fan speed regulation
- DIY robotics and automation
- 12V/5V LED strip dimming
- Conveyor belt and pump motor control
- Arduino, Raspberry Pi, and electronics prototyping projects
Please Note: Actual color may vary slightly from images due to monitor settings and lighting. Please allow ±1–2 cm measuring deviation due to manual measurement.
For guidance on electrical safety when working with electronic components and modules, visit the U.S. Consumer Product Safety Commission – Electrical Safety.
Learn more: Powertrain control module
Frequently Asked Questions
Q: What voltage range does this PWM motor speed controller support?
A: This PWM DC motor speed controller supports an input voltage range of DC 4.5V to 35V, making it compatible with common supply voltages such as 5V, 12V, 24V, and more. Always ensure your power supply stays within this range for safe operation.
Q: Can this controller be used as an LED dimmer?
A: Yes! In addition to controlling DC motor speed, this module functions as a stepless LED dimmer for 12V and 5V LED strips, spotlights, and other compatible DC lighting. Simply connect your LED load to the output terminals and adjust the potentiometer for your desired brightness level.
Q: Does this PWM controller have overcurrent or short-circuit protection?
A: Yes. The module includes built-in reverse polarity protection, overcurrent protection, and a self-recovering (auto-reset) fuse. If an overcurrent event occurs, the fuse trips automatically and resets once the fault is cleared — no replacement fuse needed.
Q: How do I change the motor's rotation direction?
A: The motor speed regulator includes a direction-switching feature. If the motor is running in the wrong direction, you can toggle the direction control on the module to reverse rotation without rewiring your motor or power supply.