can this pulse 12v , would it be ble to pulse 12v injector for cleaning ?

The voltage of your injector is between our controller voltage range (10~55V). If your injector is with a DC brush motor and the rated current is below the 60A, HARMNEE pwm motor speed controller will fit for your injector. The rated current is equal to the rate of power divided by voltage 12V.

Why is there a 3 way switch for this?

one is for turning off the motor and the other two are for forward and reverse.

Can it be used with arduino to control motor speed and direction?

I can't imagine why not as long as the Arduino project meets the volt and amp capacities of the Controller.

Lemon? Two right most terminals wired to 20V battery but the voltage across the two left most terminals always 20V no matter the % of pot adjustment.

unplug the pot and connect a meter to center leg and either side legs and check ohms clime as you turn the knob. Make sure all connections are correct. If pot works then controller is bad.

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

PWM DC Motor Speed Controller, DC 10-55V / Rated 40A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch

Product ID: 206202711

Details

Brand
HARMNEE
Color
Silver
Item Weight
0.52 Pounds
Material
Metal
Product Dimensions
3.1"L x 4.5"W

⚡40A rated current

💡LED speed display

🔄Forward-Brake-Reverse switch

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

$U2461

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

Secure transaction

Description

⚙️ Command your motor’s speed and direction like a pro—no compromises, just pure control.

DIRECTIONAL MASTERY - Intuitive forward, brake, and reverse switch gives you full control over motor rotation direction.
BUILT TO LAST COOL - Durable aluminum enclosure with strategic ventilation ensures superior heat dissipation and long-term reliability.
VERSATILE APPLICATION - Perfect for brush motor speed regulation and light dimming in DC circuits—engineered for professional-grade projects.
POWERHOUSE PERFORMANCE - Handles up to 40A rated current with a max surge of 60A for demanding DC motor tasks.
SEAMLESS SPEED CONTROL - Stepless potentiometer knob lets you dial motor speed smoothly from 0% to 100%, visible on a crisp LED display.

This PWM DC Motor Speed Controller supports DC 10-55V input with a robust 40A rated current and 60A max surge. Featuring a stepless potentiometer and LED display, it offers precise speed adjustment from 0% to 100%. The forward-brake-reverse switch enables easy directional control. Housed in a ventilated aluminum enclosure, it ensures excellent heat dissipation for reliable performance in brush motor and light dimming applications.

Specifications

ASIN	B089273KVZ
Best Sellers Rank	#44,508 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Electrical Motor Controls
Brand	HARMNEE
Brand Name	HARMNEE
Color	Silver
Customer Reviews	4.2 out of 5 stars 456 Reviews
Display Type	LED
Item Dimensions L x W x H	3.1"L x 4.5"W x 1.4"H
Item Weight	240 Grams
Manufacturer	WellHome Innovation
Material	Metal
Material Type	Metal
Model	Standard 10-55V/60A Max
Part Number	Standard 10-55V/60A Max
Product Dimensions	3.1"L x 4.5"W x 1.4"H
Smart Home Compatibility	Not Smart Home Compatible
Unit Count	1.0 Count

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

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks 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.