Will this work for a 2 phase 4 wire stepper motor?

The stepper motors work well if they are connected to drivers and with arduino and the speed can be varied, but directly connected to a speed control I have not done it before.

How do you make fan run in reverse

Well if it is a fan like those used by computers, they only have one direction where the air blows and to put them in reverse so that it blows in the opposite direction, simply turn it around. But DC motors positive and negative connection can turn in either direction clockwise or counter clockwise and can be easily controlled by inverting the polarity of the applied voltage so this motor speed controller can be used it.

can this be used as a dimmer for 24 volt LED strip?

yes of course you can use it like this too but this is limited for the current of several 16 feet led strip lights, I recommend you better use a DC12-24 30A dimmer for better results, you can buy it on ebay for $12

What size gauge wire would I use to wire this to a 775 motor

Size on the board: 32mm*15mm*50mm, what type of line do you need to connect

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RioRand 6V 12V 24V 28V 3A 80W DC Motor Speed Controller PWM Speed Adjustable Reversible Switch 1203BB DC Motor Driver Reversing

RioRand 6V 12V 24V 28V 3A 80W DC Motor Speed Controller PWM Speed Adjustable Reversible Switch 1203BB DC Motor Driver Reversing

Product ID: 537912199

Details

Brand
RioRand
Colour
1203bb
Display type
LED
Material
Copper
Voltage
24 Volts

⚡6-28V DC input range

📏Compact 3.2x5x1.5 cm size

🔄Reversible motor control

Description

⚙️ Master your motor’s speed and direction like a pro—because control is power.

WIDE VOLTAGE COMPATIBILITY - Supports 6V to 28V DC input, perfect for versatile professional applications.
PRECISION PWM SPEED CONTROL - Effortlessly dial in motor speed with smooth pulse-width modulation for ultimate performance.
REVERSIBLE DIRECTION SWITCH - Instantly toggle motor direction to adapt on the fly—forward or reverse with zero hassle.
COMPACT LIGHTWEIGHT DESIGN - Sleek 3.2x5x1.5 cm footprint and just 32g—fits seamlessly into any project setup.
BUILT IN POTENTIOMETER WITH SWITCH - Integrated control knob and switch combo for intuitive speed adjustment and motor stop/start.

The RioRand 1203BB DC Motor Speed Controller offers precise PWM speed regulation for DC motors operating between 6V and 28V, delivering up to 3A continuous current and 80W power. Its compact design includes a built-in potentiometer and reversible switch, enabling seamless forward/reverse control and speed adjustment in a lightweight, easy-to-install package.

Specifications

ASIN	B071H2YQG5
Best Sellers Rank	147,165 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 747 in Motor Speed Controllers
Brand	RioRand
Colour	1203bb
Customer Reviews	4.3 out of 5 stars 812 Reviews
Display Type	LED
Display type	LED
Global Trade Identification Number	00637012217609
Included Components	1 x RioRand dc motor speed controller
Item Type Name	6V 12V 24V 28V 3A 80W DC Motor Speed Controller PWM Speed Adjustable Reversible Switch 1203BB DC Motor Driver
Item Weight	1.13 Ounces
Item weight	1.13 Ounces
Manufacturer	RioRand
Material	Copper
Operating Temperature	20 Degrees Celsius
UPC	637012217609
Unit Count	1.0 count
Voltage	24 Volts

Reviews

C**N

Amazing product

1.04.2026

C**O

Perfect

13.10.2025

P**E

Controller

10.09.2023

D**B

I'll order this one next time.

13.12.2025

D**N

Works great!

19.12.2025

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