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.

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PWM DC Motor Speed Controller, DC 10-55V / Rated 40A / Max 60A LED Display Stepless DC Motor Controller with Adjustable Potentiometer & LED Display Screen & Forward-Brake-Reverse Switch

PWM DC Motor Speed Controller, DC 10-55V / Rated 40A / Max 60A LED Display Stepless DC Motor Controller with Adjustable Potentiometer & LED Display Screen & Forward-Brake-Reverse Switch

Product ID: 206202711

Details

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

⚡DC 10-55V wide voltage range

📊LED display for precise speed control

🔋Rated 40A, max 60A current capacity

C$2275

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Description

⚙️ Take control of your motor’s destiny with precision and power!

COOL UNDER PRESSURE - Durable aluminum enclosure with strategic ventilation ensures optimal heat dissipation for nonstop operation.
POWERHOUSE PERFORMANCE - Handles heavy-duty loads with a robust 40A rated current and spikes up to 60A max—built for serious torque.
SEAMLESS SPEED MASTERY - Stepless potentiometer lets you dial motor speed from 0% to 100% with surgical precision.
INSTANT VISUAL FEEDBACK - Bright LED display keeps you in the know with real-time speed readouts—because precision matters.
DIRECTIONAL CONTROL AT YOUR FINGERTIPS - Forward, brake, and reverse switch lets you command motor rotation effortlessly—no more guesswork.

The PWM DC Motor Speed Controller supports a wide DC voltage range (10-55V) and delivers a rated current of 40A with peaks up to 60A. Featuring a stepless potentiometer and LED display, it offers smooth, precise speed adjustments from 0% to 100%. Its forward-brake-reverse switch provides versatile directional control, while the aluminum enclosure with ventilation ensures excellent heat dissipation for reliable, long-term use in DC brush motor applications.

Specifications

ASIN	B089273KVZ
Best Sellers Rank	#58,495 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Electrical Motor Controls
Brand Name	HARMNEE
Color	Silver
Customer Reviews	4.1 4.1 out of 5 stars (468)
Display Type	LED
Item Dimensions L x W x H	3.1"L x 4.5"W x 1.4"H
Item Weight	240 g
Manufacturer	WellHome Innovation
Material Type	Metal
Model	Standard 10-55V/60A Max
Number of Items	1
Part Number	Standard 10-55V/60A Max
Unit Count	1 Count

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C$2275

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered 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 Nicaragua.

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TrustScore 4.5 | 7,300+ reviews

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