---
product_id: 349951260
title: "7-80V PWM DC Motor Speed Controller Switch 30A"
brand: "riorand"
price: "₨683"
currency: SCR
in_stock: true
reviews_count: 5
category: "Rio Rand"
url: https://www.desertcart.sc/products/349951260-7-80v-pwm-dc-motor-speed-controller-switch-30a
store_origin: SC
region: Seychelles
---

# 7-70V wide voltage range 30A high current capacity Smooth PWM speed control 7-80V PWM DC Motor Speed Controller Switch 30A

**Brand:** riorand
**Price:** ₨683
**Availability:** ✅ In Stock

## Summary

> 🎯 Master motor speed like a pro with RioRand’s precision controller!

## Quick Answers

- **What is this?** 7-80V PWM DC Motor Speed Controller Switch 30A by riorand
- **How much does it cost?** ₨683 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/349951260-7-80v-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 circuit ensures long-term stability for continuous, heavy-duty use.
- • **Seamless Speed Adjustment:** PWM control delivers smooth, vibration-free motor speed transitions without noise.
- • **Built-In Run/Stop Brake Switch:** Integrated switch offers instant motor control for professional-grade responsiveness.
- • **Unleash High Current Performance:** Robust 30A current handling ensures reliable operation under heavy loads.
- • **Power Your Projects with Precision:** Wide 7-70V voltage range supports diverse DC brush motors effortlessly.

## Overview

The RioRand 7-70V PWM DC Motor Speed Controller is a high-performance device designed for precise speed regulation of DC brush motors. Featuring a wide voltage input range and 30A current capacity, it supports smooth acceleration and deceleration with minimal noise and vibration. Its built-in run/stop brake switch and stable circuit design make it ideal for professional and industrial applications requiring reliable, long-term motor control.

## Description

Brand:RioRandProduct Name :DC Brush Motor Speed Controller DC Controller is required in the following situations:1. Need a wider speed range.2. Need fast dynamic response process.3. Automatic smooth transition is required during acceleration and deceleration.4. High torque is required when low speed operation is required.5. Good excavator characteristics are needed, which can automatically limit the overload current to the set current6.And it is a DC Motor Speed Controller,Not a Voltage Controller

Review: Used this controller on 12v radiator fans, and works like a charm. Easy wire up as well
Review: Bought to control the speed to my salt spreader for my truck,it's a tailgate spreader. Works amazing for the price can't beat it

## 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 |
|---------------|-------|
| ASIN | B071NQ5G71 |
| Batteries Included? | No |
| Best Sellers Rank | #125,479 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #147 in Electrical Motor Controls |
| Brand | RioRand |
| Color | Green |
| Customer Reviews | 4.2 4.2 out of 5 stars (4,114) |
| Date First Available | 14 November 2017 |
| Included Components | NO |
| Is Discontinued By Manufacturer | No |
| Item model number | 7-70V PWM DC |
| Manufacturer | RioRand |
| Material Type | copper |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Product Dimensions | 8.64 x 5.84 x 3.56 cm; 127.01 g |

## Images

![7-80V PWM DC Motor Speed Controller Switch 30A - Image 1](https://m.media-amazon.com/images/I/71tU-B63OCL.jpg)

## Available Options

This product comes in different **Color** options.

## 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***C on 4 December 2025*

Used this controller on 12v radiator fans, and works like a charm. Easy wire up as well

### ⭐⭐⭐⭐⭐ Review
*by C***K on 21 December 2025*

Bought to control the speed to my salt spreader for my truck,it's a tailgate spreader. Works amazing for the price can't beat it

### ⭐⭐⭐⭐⭐ Review
*by B***. on 29 June 2024*

I used this to reduce the voltage on a Power Wheels that now operates on a Dewalt 20V Max battery. The board appears to be relatively simple. I am not an experienced electrical technician, but the one feature I would have liked to see was some indication on the dial as to what voltage was being given. In lieu of this, I placed an LCD voltage monitor on the output side and can now monitor the voltage being sent to the motor, but it’s essentially useless as the meter will show high spikes of voltage and then drop, which I suspect is the result of the use of the lithium ion batteries. Nonetheless, when the dial is too low, the motor will not turn, and an adjustment of the dial will adjust in over-voltage, so this piece certainly does work.

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-20*