--- product_id: 114286017 title: "Low Voltage DC Motor Speed Controller 1.8v 3v 5v 6v 7.2v 12v 2A 30W PWM 1803BK Adjustable Driver Switch with Speed Control Knob(10 Pack)" brand: "onyehn" price: "£19.12" currency: GBP in_stock: true reviews_count: 8 category: "Onyehn" url: https://www.desertcart.co.uk/products/114286017-low-voltage-dc-motor-speed-controller-1-8v-3v-5v store_origin: GB region: United Kingdom --- # 2A max continuous current 0%-100% PWM duty cycle control 1.8V-15V DC input voltage range Low Voltage DC Motor Speed Controller 1.8v 3v 5v 6v 7.2v 12v 2A 30W PWM 1803BK Adjustable Driver Switch with Speed Control Knob(10 Pack) **Brand:** onyehn **Price:** £19.12 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your motor’s pace — control with confidence and style! ## Quick Answers - **What is this?** Low Voltage DC Motor Speed Controller 1.8v 3v 5v 6v 7.2v 12v 2A 30W PWM 1803BK Adjustable Driver Switch with Speed Control Knob(10 Pack) by onyehn - **How much does it cost?** £19.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/114286017-low-voltage-dc-motor-speed-controller-1-8v-3v-5v) ## Best For - onyehn enthusiasts ## Why This Product - Trusted onyehn brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built-In Safety Fuse:** Self-recovery 2A fuse protects your projects from overloads automatically. - • **Power-On LED Indicator:** Instant visual confirmation that your controller is active and ready. - • **Precision Speed Control:** Smoothly adjust motor speed from zero to full throttle with a tactile knob. - • **Compact & Durable Design:** Metal and plastic build fits neatly into any DIY or professional setup. - • **Wide Voltage Compatibility:** Supports low voltage DC motors from 1.8V up to 15V for versatile applications. ## Overview This 10-pack of Onyehn 1803BK PWM DC motor speed controllers offers precise, adjustable speed regulation for low voltage motors (1.8V-15V DC) with a max continuous current of 2A and 30W power. Featuring a self-recovery fuse for overload protection, a power-on LED, and a user-friendly potentiometer knob, these compact controllers are ideal for DIY projects, STEM kits, and professional automation tasks requiring reliable, safe motor speed management. ## Description Product description 10pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W PWM 1803BK Adjustable Driver Switch with Speed Control Knob Operating instruction 1.Before you attempting to wire the controller, make sure power is off. 2.Please Check all connections before applying power, it will be damaged if connect the supply voltage with wrong polarity. 3.Turn on the power, and adjust the potentiometer.The LED indicates the power up and the speed of motor. 4.You can control the speed of the motor through potentiometer. Notice 1.Please kindly allow 1-2mm differs due to manual measurement. 2.Don't directly connected to household 220V AC, please connect this DC controller to DC power supply. 3.Turn off the power supply before making any wiring changes 4.If you want to change motor direction,interchange the positive and negative wires of motor.(Connect wires refer to the "wiring diagram" (NO.5 picture)). 5. We suggest to add an appropriately rated fuse in line with the positive supply to avoid any possible damage. Specification Input supply voltage:1.8V-15V(DC) The max continuous output current :2A The controller is safe with a 2A resettable fuse The max output power:30W Duty Cycle adjustable: 0%-100% Package included 10Pcs PWM DC motor speed controller Review: Works great, good value for price - Used with a small dc motor with 2 AA batteries for a diy stem kit type thing. This doubles as an on/off switch when turned all the way, it clicks off. Worked as expected. Review: Awesome product - I haven't tried 12v but every over input and output, worked wonderful, would recommend 100% . I'm wondering if you they do big bulk ## Features - 🌟Important Notes： An Appropriately Rated Fuse (Rated A Little Higher Than The Maximum Current You Expect To Draw) Is Recommended To Ensure Safe Operation. The Controller Is Safe With A Self-Recovery Fuse 2a. It Will Be Damaged If Connect The Supply Voltage With Wrong Polarity. Double Check All Connections Before Applying Power And Always Turn Off The Power Supply Before Making Any Wiring Changes - 🌟Note: Dc Motor Speed Regulator Dc Power Supply, Do Not Be Directly Connected To Household 220v Ac.This Brand New 1803bk Dc Motor Speed Controller Allows Controlling The Direction Of A Dc The Motor Using A Pulse-Width-Modulated (Pwm) Dc Voltage With A Duty Cycle Fully The Product Adjust From 0%-100%. - 🌟With A Self-Recovery Fuse 2a And A Power-On Led Light.If The Current Is Too Large, It Will Be Automatically Disconnected, And The Fuse Will Automatically Recover After Cooling. Pwm Dc Motor Speed Controller With Switch Function. - 🌟Connect A Voltage Of 1.8v-15v Dc To The Circuit Making Sure Of The Correct Polarity Of The Connection. Note That The Voltage Applied To The Motor Will Be Supply Voltage Applied To The Circuit. It Is Recommended To Add An Appropriately Rated Fuse In Line With The Positive Supply In Order To Protect The Circuit From Any Possible Short Circuits. - 🌟This Is A Speed Governor With A Maximum Current Of 2a. If The Continuous Current Is Greater Than 0.5a, The 775 Motor And The Stroller Motor Will Not Move. Don'T Buy It Wrong. It Is Not Recommended To Supply Power Greater Than 12v, Such As 12v Lead-Acid Batteries, Which May Cause Damage To The Governor. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NPJ5MQR | | Best Sellers Rank | #503,208 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #453 in Electrical Motor Controls | | Brand | Onyehn | | Brand Name | Onyehn | | Circuit Type | series | | Connector Type Used on Cable | None Required | | Contact Type | Spdt | | Current Rating | 2 Amps | | Customer Reviews | 4.4 out of 5 stars 193 Reviews | | Item Dimensions L x W x H | 1.26"L x 1.26"W x 0.59"H | | Item Weight | 78 Grams | | Manufacturer | Onyehn | | Material | Metal, Plastic | | Material Type | Metal, Plastic | | Model | 1803BK | | Operating Voltage | 15 Volts (DC) | | Operation Mode | Automatically,Off | | Part Number | 1803BK | | Switch Type | Potentiometer | | Voltage | 15 Volts (DC) | | Wattage | 30 watts | ## Product Details - **Brand:** Onyehn - **Contact Type:** Spdt - **Current Rating:** 2 Amps - **Material:** Metal, Plastic - **Voltage:** 15 Volts (DC) ## Images ![Low Voltage DC Motor Speed Controller 1.8v 3v 5v 6v 7.2v 12v 2A 30W PWM 1803BK Adjustable Driver Switch with Speed Control Knob(10 Pack) - Image 1](https://m.media-amazon.com/images/I/71qfwwXJYOL.jpg) ## Questions & Answers **Q: I cannot get this to work with a 3.5~9v dc pump (which can be controlled via an inline usb unit similar to this). what resistor is tied to the pot?** A: It is a PWM. It should work with a DC motor in most instances. **Q: What size hole for the shaft?** A: Need more information about the shaft. **Q: I need to adjust output voltage 0-5vdc (to motor) using 15vdc in (power), will this do that ?** A: This cannot be done. This is just a speed-regulating motor with a maximum current of 2A. If the continuous current exceeds 0.5A, it won't work. It is not recommended to connect with a voltage exceeding 12v, which may cause damage to the controller **Q: Can this work as a dc light dimmer?** A: It should work ok as a low voltage dimmer. Probably OK for LEDs ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great, good value for price *by A***R on April 19, 2025* Used with a small dc motor with 2 AA batteries for a diy stem kit type thing. This doubles as an on/off switch when turned all the way, it clicks off. Worked as expected. ### ⭐⭐⭐⭐⭐ Awesome product *by H***. on July 17, 2020* I haven't tried 12v but every over input and output, worked wonderful, would recommend 100% . I'm wondering if you they do big bulk ### ⭐⭐⭐⭐ Quick Test Run *by J***N on March 29, 2022* Out the box with a quick test run, all 6 worked fine. Not sure about long usage, I just received them. Sturdy and easy to use. Speed control is awesome and if they hold-up, they will work perfectly for my project ## Frequently Bought Together - Onyehn Low Voltage DC Motor Speed Controller 1.8v 3v 5v 6v 7.2v 12v 2A 30W PWM 1803BK Adjustable Driver Switch with Speed Control Knob(10 Pack) - ALITOVE DC 12V 5A Power Supply Adapter Converter Transformer AC 100-240V Input with 5.5x2.5mm DC Output Jack for 5050 3528 LED Strip Module Light - Amarine Made Marine Boat 12v Electric in Line Bilge Air Blower fan Boat Engine Blowers Marine Cabin Engine Ventilation Blower Fan130cfm (3) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/114286017-low-voltage-dc-motor-speed-controller-1-8v-3v-5v](https://www.desertcart.co.uk/products/114286017-low-voltage-dc-motor-speed-controller-1-8v-3v-5v) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-27*