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

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Details

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

⚡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 — don’t get left behind!

LED POWER SPEED INDICATOR - Visual feedback with LED signals ensures you’re always in control and aware of motor status.
PRECISION PWM SPEED CONTROL - Seamlessly adjust motor speed with smooth pulse-width modulation for ultimate performance tuning.
REVERSIBLE DIRECTION SWITCH - Effortlessly switch motor rotation forward or backward, enhancing control and flexibility.
COMPACT LIGHTWEIGHT DESIGN - Small footprint (3.2x5x1.5 cm) and ultra-lightweight (30g) for easy integration into any workspace or device.
VERSATILE VOLTAGE COMPATIBILITY - Supports a broad 6V to 28V DC input range, perfect for diverse professional projects and setups.

The RioRand 1203BB DC Motor Speed Controller offers precise PWM-based speed regulation for DC motors within a 6-28V range, supporting up to 3A continuous current and 80W power. Its reversible switch allows easy direction control, while its compact size and LED indicators make it an essential tool for professionals seeking reliable, versatile motor management.

Specifications

UPC	637012217609
Global Trade Identification Number	00637012217609
Manufacturer	RioRand
Part Number	RR-PWM-3A
Product Dimensions	5.08 x 3.3 x 1.02 cm; 30 g
Item model number	RR-PWM-3A
Finish	Motor speed controller
Power Source	Corded Electric
Item Package Quantity	1
Included Components	1 x RioRand dc motor speed controller
Batteries included?	No
Batteries Required?	No
Item Weight	30 g

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