---
product_id: 42937479
title: "RioRand 7-70V PWM DC Motor Speed Controller Switch 30A"
brand: "riorand"
price: "VT5837"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/42937479-riorand-7-70v-pwm-dc-motor-speed-controller-switch-30a
store_origin: VU
region: Vanuatu
---

# 7-70V wide voltage range 30A high current capacity Smooth PWM speed control RioRand 7-70V PWM DC Motor Speed Controller Switch 30A

**Brand:** riorand
**Price:** VT5837
**Availability:** ✅ In Stock

## Summary

> ⚙️ Take control of your motor’s speed like a pro — no noise, no fuss, just power.

## Quick Answers

- **What is this?** RioRand 7-70V PWM DC Motor Speed Controller Switch 30A by riorand
- **How much does it cost?** VT5837 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/42937479-riorand-7-70v-pwm-dc-motor-speed-controller-switch-30a)

## 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

- • **Durable & Stable Design:** Optimized circuitry built for long-term, uninterrupted operation.
- • **Seamless Speed Adjustment:** PWM duty cycle tuning delivers whisper-quiet, vibration-free motor control.
- • **Versatile Voltage Mastery:** Supports an expansive 7-70V range for diverse industrial and DIY projects.
- • **Powerhouse Current Handling:** Robust 30A capacity ensures reliable performance under heavy loads.
- • **Integrated Run-Stop-Brake Switch:** Onboard switch with multi-function control for instant motor management.

## Overview

The RioRand 7-70V PWM DC Motor Speed Controller Switch 30A is a compact, high-performance device designed to regulate DC brush motor speeds smoothly and efficiently. Featuring a wide voltage input range and a high current rating, it supports a variety of applications with stable, vibration-free operation. Its integrated run-stop-brake switch and optimized circuitry make it ideal for professional and industrial use, ensuring long-lasting, reliable motor control.

## Description

RioRand 7-70V PWM DC Motor Speed Controller Switch 30A

## Features

- Wide voltage 7-70V high current 30A design for a wide range of applications, on-board switch with run stop brake function, adjust the potentiometer soft line can be separated, wire length 15CM.
- Circuit for optimized design, duty cycle adjustment range is wide, adjust the motor smooth without bath sound No vibration, with power indication, the circuit design is stable and suitable for long time work.
- This product is a DC brush motor speed controller, need a separate DC power supply to the governor/controller power supply can not be connected to AC power can not drive brushless motor.
- Before wiring power, please read the wiring label, the input is DC power positive and negative poles can not be engaged, the output is connected to the motor (motor) does not need to be divided into positive and negative, if the direction of operation is not right, please replace the motor of the two wires.
- On the voltage or current regulation, adjust the duty cycle is in the unit time to control the on-off time, the output is a pulse, no-load with a voltmeter to measure the output voltage and input close to the motor connected to change the duty cycle added to the motor on both sides of the average voltage changes to achieve speed regulation, the voltage changes in the current of course followed by changes. The role of the current, and the current is derived from the change in voltage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RioRand |
| Part Number | RR-MJLK-FBDG |
| Item Weight | 4.5 ounces |
| Product Dimensions | 3.4 x 2.3 x 1.4 inches |
| Item model number | 7-70V PWM DC |
| Is Discontinued By Manufacturer | No |
| Color | Green |
| Material | copper |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | NO |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![RioRand 7-70V PWM DC Motor Speed Controller Switch 30A - Image 1](https://m.media-amazon.com/images/I/71tU-B63OCL.jpg)

## Questions & Answers

**Q: What does p and m mean? If Have 3 dc fans wired in parallel, which ports would be appropriate to install the wires into. And where to install power?**
A: Pwm stands for pulse width modulation.  It's a way to take the available power from the battery and mange the power delivery to the device.  Instead of the battery discharging at 100% rate, the power is being sent out in on/off pulses.  This reduces the battery drain.  The frequency of the pulses is selected by the user when turning the control knob.  Some devices will work well with this (dc electric motors with this unit) and others may not.  The benefits of this are: (1) Battery efficiency - This scheme is commonly used for motors powered by batteries to achieve significant improvements in battery life.  I use mine (50 amp version) to run my older trolling motor.  My batteries can last even double the amount of time by dialing back the knob so that I'm sending out a smaller percentage of the power than 100%.  So, for example, if I chose to have the control set to 40% of max I would achieve a significant improvement in battery life.  This also means that the motor would run slower.  There is a trade off in performance, but it heavily favors battery efficiency.  The way I use it, is with a voltage meter readout to observe it's performance.  I've been able to deduce that the most efficient gear to use on my trolling motor is the fastest gear.  Once I know that, I turn the dial to achieve the speed I want to go instead of achieving the same speed in a less efficient gear.  I watch the battery meter to observe how fast the battery draw down is happening over time and choose a top speed that I'm willing to live with as a trade off of power versus battery life.  Why this works is because batteries are most efficient when the discharge rate is the slowest.  If I'm maxing the battery discharge rate, I'm reducing the battery run time. There is a sweet spot where the battery is happy and the speed is acceptable.  (2) Infinite variable speed.  This offers variable speed to a motor that only has one speed or several geared speeds.  If you couldn't quite hit the right trolling speed in a fixed gear, you can nail the speed with this variable speed control.  (3) Some units also have polarity reversal, which means that I can flip that switch and the motor will go in reverse.  If a person fashioned a remote steering system for the trolling motor, the trolling motor tiller handle wouldn't have to be touched.  It could operate remotely from another location in the boat.  Some newer motors have this feature built in, so this device wouldn't have any benefit.  A different application would be to have a 12 volt power supply and a 12 volt motor (old treadmills can sometimes have the motors).  Hook up the 12 volt motor to a drill press, lathe, bandsaw, etc. and the device would now achieve variable speed.  This is really useful for these tools.  In the case of a bandsaw, a typical woodworking bandsaw witht the right blade can run slow enough to cut metal.  The simpler way to have this effect for those tools would be to get an AC version of the pwm.  This would still work, but would be more ideal for someone willing to retrofit the tool.  It would be good for alternative energy users (solar, wind, battery banks).

**Q: How many wires come from the potentionmeter and can you add on to them?**
A: 3 wires. tiny voltage divider...  this is all based on a 555 circuit driving 3 mosfets in parallel.

**Q: Will this work with 2 power wheel motors?**
A: As long as the power wheels motors are within its voltage range, yes. Just be careful not to feed them more voltage than they are rated for, or use a power supply whose voltage is matched to the spec of the motors

**Q: ¿nesecito para regular pulidoras cual es recomendable?**
A: Este aparato es muy servisial y creo que si lo puedes usar en las pulidora rregula la belosidad

## Frequently Bought Together

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-26*