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?

It is a PWM. It should work with a DC motor in most instances.

What size hole for the shaft?

Need more information about the shaft.

I need to adjust output voltage 0-5vdc (to motor) using 15vdc in (power), will this do that ?

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

Can this work as a dc light dimmer?

It should work ok as a low voltage dimmer. Probably OK for LEDs

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

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

Product ID: 351603166

Details

Brand
Onyehn
Colour
Green
Contact Type
Spdt
Current Rating
2 Amps
Voltage
15 Volts (DC)

⚡2A continuous current

💡Power-On LED indicator

🔄0%-100% PWM duty cycle

Description

⚙️ Master your motor’s rhythm with precision and safety — don’t get left behind!

BUILT IN SAFETY FUSE - Self-recovering 2A fuse protects your device from overloads, ensuring worry-free operation.
COMPACT LIGHTWEIGHT - At just 32x32x15mm and 14g, it fits effortlessly into any setup without bulk or weight.
PRECISION SPEED CONTROL - Fine-tune your DC motor speed seamlessly from 0% to 100% PWM duty cycle for ultimate performance.
INTEGRATED ON OFF SWITCH - Convenient switch function doubles as an on/off toggle, simplifying motor control in one sleek package.
UNIVERSAL VOLTAGE COMPATIBILITY - Supports a wide input range from 1.8V up to 15V DC, perfect for diverse DIY and professional projects.

The Onyehn 1803BK PWM DC Motor Speed Controller is a compact, versatile device designed to deliver up to 2A continuous current and 30W power. It offers precise speed adjustment via PWM from 0% to 100%, includes a self-recovering fuse for overload protection, and features an integrated on/off switch with a power indicator LED. Compatible with 1.8V to 15V DC motors, it’s ideal for DIY enthusiasts and professionals seeking reliable, safe, and efficient motor speed control.

Specifications

ASIN	B07NPJ5MQR
Brand Name	Onyehn
Circuit Type	series
Colour	Green
Connector Type Used on Cable	No external connector required
Contact Type	Spdt
Current Rating	2 Amps
Customer Reviews	4.4 4.4 out of 5 stars (182)
Item Weight	78 Grams
Manufacturer	Onyehn
Material Type	Plastic
Model Number	1803BK
Number of Positions	6
Operating Voltage	15 Volts (DC)
Operation Mode	automatic
Part Number	1803BK
Voltage	15 Volts (DC)
Wattage	30 Watts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews