Mini DC Motor Speed Controller 1.8V–15V PWM Regulator Module

Mini 1803BK DC Motor Speed Regulator Controller Module

Take precise control of your DC motors and LED lighting with the compact 1803BK PWM DC Motor Speed Controller. This small but powerful module uses Pulse-Width Modulation (PWM) technology to deliver smooth, stepless speed adjustment from 0% to 100% — all with minimal heat generation and virtually no noise at low speeds. Perfect for hobbyists, electronics enthusiasts, and industrial applications alike.

Made in Mainland China.

Key Features

• Wide Voltage Range: Works with DC 1.8V to 15V power supplies, making it highly versatile across projects
• PWM Speed Control: Smooth, stepless adjustment from 0% to 100% speed — no unwanted noise at low settings
• Built-in Resettable Fuse: Onboard 2A resettable fuse protects the controller and your components from overcurrent damage
• Dual Function: Controls both DC motor speed and LED light brightness with ease
• Onboard Power Indicator: LED indicator shows power status at a glance
• Potentiometer Switch: The potentiometer doubles as a power switch for added convenience
• High Efficiency & Low Heat: High-torque governor design keeps heat output minimal during extended operation
• Compact & Lightweight: Ultra-small footprint (32 × 32 × 14 mm) fits easily into any project enclosure

Specifications

Common Use Cases

• DC fan speed control
• LED strip and bulb brightness adjustment
• Small pump and motor speed regulation
• DIY electronics and robotics projects
• Industrial automation and machinery control

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Note: Minor dimensional variance of ±1–2mm is within normal tolerance. Actual product color may vary slightly from images due to monitor calibration and photography lighting.

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Frequently Asked Questions

Q: What types of motors can I use with the 1803BK DC Motor Speed Controller?

A: The 1803BK PWM speed controller is compatible with most small DC motors operating within a voltage range of 1.8V to 15V and a current draw of up to 2A. This includes DC fan motors, small pump motors, hobby motors, and similar low-voltage DC applications.

Q: Can the 1803BK controller also regulate LED light brightness?

A: Yes! In addition to motor speed control, this module works excellently as an LED dimmer. Simply connect your DC LED strip or bulb within the supported voltage and current range, and use the onboard potentiometer to smoothly adjust brightness from 0% to 100%.

Q: Is the controller protected against overcurrent or short circuits?

A: The module features an onboard 2A resettable fuse that automatically trips if current exceeds safe levels, protecting both the controller and your connected devices. Once the fault is cleared, the fuse resets — no need to replace it.

Q: How do I connect and power the 1803BK speed controller?

A: Connect your DC power supply (1.8V–15V) to the input terminals, and your motor or LED load to the output terminals. Turn the potentiometer to adjust the output duty cycle and thus the motor speed or brightness. The potentiometer also serves as a power switch when turned to the minimum position.

Production & Packaging Notice

To 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.