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 PWM DC Motor Speed Controller – 6V-28V 3A Reversible Speed Regulator with Forward/Reverse Switch for Low Voltage Brushed DC Gear Motors, Hobby & Small Automation Projects

RioRand PWM DC Motor Speed Controller – 6V-28V 3A Reversible Speed Regulator with Forward/Reverse Switch for Low Voltage Brushed DC Gear Motors, Hobby & Small Automation Projects

Product ID: 44291606

Details

Brand
RioRand
Color
1203BB
Item Weight
1.13 ounces
Material
Copper
Voltage
24 volts

⚡6V-28V wide voltage range

📏Compact 3.2×5×1.5 cm size

🔄Forward/Reverse toggle switch

Rp480292

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Description

🔧 Control Your Motor, Command Your Project — Speed, Direction, Precision!

SEAMLESS SPEED MASTERY - Stepless PWM control delivers ultra-smooth motor speed adjustments for precision performance.
POWER MEETS PORTABILITY - Supports up to 3A continuous current and 80W output in a sleek, lightweight design that fits anywhere.
DURABILITY YOU CAN TRUST - High-temp silicone wiring ensures flexible installation and long-lasting reliability under pressure.
BUILT FOR MAKERS LOVED BY PROS - Ideal for hobbyists and small automation projects—robotics, RC vehicles, model trains, and more.
FLIP THE SWITCH CHANGE THE GAME - 3-position toggle for instant forward, stop, or reverse motor direction—effortless control at your fingertips.

The RioRand PWM DC Motor Speed Controller offers professional-grade, stepless speed regulation for low-voltage brushed DC motors from 6V to 28V, handling up to 3A and 80W output. Featuring a forward/reverse toggle switch and compact design, it’s perfect for hobbyists and small automation projects requiring reliable, precise motor control.

Specifications

ASIN	B071H2YQG5
Best Sellers Rank	#39,687 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Electrical Motor Controls
Brand Name	RioRand
Color	1203BB
Customer Reviews	4.3 4.3 out of 5 stars (885)
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
Manufacturer	RioRand
Material Type	Copper
Model	RR-PWM-3A
Part Number	RR-PWM-3A
UPC	637012217609
Unit Count	1 Count
Voltage	24 volts

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Rp480292

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