--- product_id: 351603166 title: "3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack" brand: "onyehn" price: "฿4903" currency: THB in_stock: true reviews_count: 5 category: "Onyehn" url: https://www.desertcart.co.th/products/351603166-3pcs-1-8v-3v-5v-6v-7-2v-12v-2a store_origin: TH region: Thailand --- # 2A continuous current Power-On LED indicator 0%-100% PWM duty cycle 3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack **Brand:** onyehn **Price:** ฿4903 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your motor’s speed with precision and safety — because control is power! ## Quick Answers - **What is this?** 3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack by onyehn - **How much does it cost?** ฿4903 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/351603166-3pcs-1-8v-3v-5v-6v-7-2v-12v-2a) ## 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-recovering 2A fuse protects your device from overloads—no downtime, no worries. - • **Compact & Lightweight:** At just 32x32x15mm and 14g, it fits effortlessly into any project or workspace. - • **Instant Visual Feedback:** Power-On LED lets you monitor operation status at a glance, ensuring smooth control. - • **Precision Speed Control:** Seamlessly adjust motor speed from 0% to 100% PWM for ultimate performance tuning. - • **Universal Voltage Range:** Supports 1.8V to 15V DC input, making it versatile for a wide range of motors and applications. ## Overview The Onyehn 1803BK PWM DC Motor Speed Controller is a compact, versatile device designed for precise speed regulation of DC motors within 1.8V to 15V input range. Featuring a 2A self-recovering fuse and power-on LED indicator, it ensures safe, reliable operation while delivering up to 30W output power. Ideal for professionals seeking efficient motor control with built-in protection and easy integration. ## Description Specifications: Input supply voltage:1.8V-15VDC The max output power:30W The max continuous output current :2A Duty Cycle adjustable: 0%-100% Size: approx. 32*32*15mm/1.25*1.25*0.59'' Net weight: approx. 14g Note: DC motor speed regulator DC power supply, do not be directly connected to household 220V AC. Please allow 1-3mm differs due to manual measurement. 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. You can now control the speed of the motor through potentiometer. 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 changesDue to different batches of products, backplane style and cap color are shipped randomly Review: Works great, good value for price Review: Awesome product ## Features - 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. - Enable to provide a continuous current of 2A to your DC motor or other DC load. - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NPJ5MQR | | Brand | Onyehn | | Brand Name | Onyehn | | Circuit Type | series | | Colour | Green | | Connector Type Used on Cable | No external connector required | | Contact Type | Spdt | | Country of Origin | USA | | Current Rating | 2 Amps | | Customer Reviews | 4.3 out of 5 stars 184 Reviews | | Item Weight | 78 Grams | | Manufacturer | Onyehn | | Material Type | Plastic | | Model Number | 1803BK | | Number of Positions | 3 | | Operating Voltage | 15 Volts (DC) | | Operation Mode | automatic | | Voltage | 15 Volts (DC) | | Wattage | 30 Watts | ## Product Details - **Voltage:** 15 Volts (DC) - **Colour:** Green - **Brand:** Onyehn - **Current Rating:** 2 Amps - **Number of Positions:** 3 ## Images ![3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack - Image 1](https://m.media-amazon.com/images/I/71qfwwXJYOL.jpg) ![3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack - Image 2](https://m.media-amazon.com/images/I/71Fmmva3x6L.jpg) ![3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack - Image 3](https://m.media-amazon.com/images/I/61s63h7oyIL.jpg) ![3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack - Image 4](https://m.media-amazon.com/images/I/41ZNB3mYBwL.jpg) ![3Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 3 Pack - Image 5](https://m.media-amazon.com/images/I/51-lqgqp1hL.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 19 April 2025* ### ⭐⭐⭐⭐⭐ Awesome product *by H***. on 17 July 2020* ### ⭐⭐⭐⭐ Quick Test Run *by J***N on 29 March 2022* ## 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.th/products/351603166-3pcs-1-8v-3v-5v-6v-7-2v-12v-2a](https://www.desertcart.co.th/products/351603166-3pcs-1-8v-3v-5v-6v-7-2v-12v-2a) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-29*