---
product_id: 3682598
title: "RioRand Upgraded Adjustable DC Motor Speed PWM Controller 10V 12V 24V 30V Reversing Switch 120W"
brand: "riorand"
price: "€ 24.83"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rio Rand"
url: https://www.desertcart.es/products/3682598-riorand-upgraded-adjustable-dc-motor-speed-pwm-controller-10v-12v
store_origin: ES
region: Spain
---

# 120W max output power PWM frequency 500 KHz for precise speed modulation Reversing switch for bidirectional control RioRand Upgraded Adjustable DC Motor Speed PWM Controller 10V 12V 24V 30V Reversing Switch 120W

**Brand:** riorand
**Price:** € 24.83
**Availability:** ✅ In Stock

## Summary

> ⚙️ Master your motor’s pace with precision and power!

## Quick Answers

- **What is this?** RioRand Upgraded Adjustable DC Motor Speed PWM Controller 10V 12V 24V 30V Reversing Switch 120W by riorand
- **How much does it cost?** € 24.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/3682598-riorand-upgraded-adjustable-dc-motor-speed-pwm-controller-10v-12v)

## Best For

- riorand enthusiasts

## Why This Product

- Trusted riorand brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Protect:** Overload and short circuit protection up to 4A keeps your setup safe
- • **Wide Voltage Range:** Operates from 10V to 30V DC, compatible with various brush motors
- • **Power Your Precision:** Supports up to 120W output power for robust motor control
- • **Smooth Speed Control:** High-frequency 500 KHz PWM ensures ultra-responsive speed adjustments
- • **Seamless Direction Shift:** Integrated reversing switch lets you effortlessly change motor rotation

## Overview

The RioRand Upgraded Adjustable DC Motor Speed PWM Controller delivers precise speed control for brush motors with a robust 120W output and a wide 10-30V operating voltage. Featuring a high-frequency 500 KHz PWM for smooth modulation and a reversing switch for bidirectional motor operation, it also includes built-in overload and short circuit protection to ensure durability and safety. Ideal for professionals seeking reliable, adjustable motor speed control in compact form.

## Description

RioRand Upgraded Adjustable DC Motor Speed PWM Controller 10V 12V 24V 30V Reversing Switch 120W: desertcart.com: Industrial & Scientific

Review: Worked Perfectly! - This is quite a bit of electronics for the price. I used this to cut down the speed of a motor I use to drive a small rock polisher. It works perfectly. I really appreciated the graphics on desertcart that show how to wire it up as it did not come with instructions on how to wire it. But, as I said, there is a great picture on the desertcart page that clearly shows how to connect the wires.
Review: very nice - it works grate it did the job

## Features

- Maximum continuous output current:3A ;Overload short circuit protection current:4A ,short circuit time does not exceed 30 seconds
- Working Voltage:DC 10V - DC 30V;Maximum output power:120W
- PWM Frequency: 500 KHz;PWM Pulse Width Modulation Range: 5% -95%
- Applicable Motor:brush motor
- Please note that this controller has a low frequency causing some types of the motor to whine at low speeds but not all motors will be like this

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00HTZD9YI |
| Best Sellers Rank | #55,520 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #26 in Motor Speed Controllers |
| Date First Available | September 15, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.11 ounces |
| Item model number | RRPDMSCSGSPC |
| Manufacturer | RioRand |
| Product Dimensions | 3.94 x 2.76 x 1.18 inches |

## Images

![RioRand Upgraded Adjustable DC Motor Speed PWM Controller 10V 12V 24V 30V Reversing Switch 120W - Image 1](https://m.media-amazon.com/images/I/6162Z-Fn29L.jpg)

## Questions & Answers

**Q: I connected this to a 4.3 amp Fantastic RV fan to save energy.  However now the motor whines at low speed at the PWM freq.  How can I stop the noise?**
A: You might cure that with a capacitor with a voltage rating higher than the supply voltage, and perhaps a capacity rating of 100 mfd.  This capacitor type is polarity rated, so you would need to put it across the terminals going to the fan in way you are supplying the voltage.  You would also have to be sure not to reverse the power to make the fan go the other direction.  capacitor could probably be as low as 20 mfd. It can be placed anywhere in the line, or right at the fan.  The capacitor should smooth out the chopping voltage.  As scott says, it might not list to run on low power.

**Q: can this contoller switch be used for a razor motor scooter E 300 is 300 watts but if i put a 12 volt battery???**
A: No. Your scooter will require a controller that will handle at least 25 amps (the formula is 300 watts, divided by 12 volts, equals 25 amps). This controller is rated at 3 amps continuous and 4 amps peak -  at 12 volts that's only 36 watts continuous.

**Q: I want to build an electric scooter.  Is this a good reverse and speed controler for a DC 12v motor and battery**
A: Actually - No, not if it's something you want to ride on.  The circuitry in this is simply not heavy duty enough to handle that kind of load or that large a motor.  This circuit is intended for something on the order of a toy motor, no more than an amp or two at most.

**Q: Can anyone help me find a wiring diagram for this item please.**
A: The third picture shows how to connect the power supply and the motor. That should be all you need.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked Perfectly!
*by R***. on November 18, 2025*

This is quite a bit of electronics for the price. I used this to cut down the speed of a motor I use to drive a small rock polisher. It works perfectly. I really appreciated the graphics on Amazon that show how to wire it up as it did not come with instructions on how to wire it. But, as I said, there is a great picture on the Amazon page that clearly shows how to connect the wires.

### ⭐⭐⭐⭐⭐ very nice
*by J***M on December 24, 2025*

it works grate it did the job

### ⭐⭐⭐⭐ Recommended but with one qualification
*by P***N on October 23, 2023*

Revised. This is a good controller, but I have edited this review to deduct one star for the noise. In all other respects it worked really well, but at lower speeds it does generate a whine that is loud enough to become annoying after awhile. Other than that, for my application of the controlling speed and direction of a 17V Buehler gearhead motor it functions smoothly. The board is neat, well laid out and has excellent soldering. The heat sinks on both the MC7812 voltage regulator and the 7575C NFET chip are substantial and should easily handle any heat rise which should be minimal for my application. I particularly liked that both the pot and the direction switch are mounted on wire connectors which makes panel installation simple. As seems common, this regulator has a large heat shrink shroud covering the direction switch terminals which had to be removed to fit into the panel opening. However, since the wires are individually attached to the board at a screw terminal it was simple to remove the shroud and add heat shrink to each wire. The board can be mounted in any convenient spot and the two wiring connectors have plenty of length (about 6 – 7”) to reach the panel. Overall, I found this to be an excellent PWM motor controller providing smooth speed and direction control, and provided that the low whine is not a problem for you as it really is not for me, then it should be a good choice.

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-06*