---
product_id: 451688731
title: "ZK-BMG DC Motor Speed Controller, DC Motor Controller 9V-60V/12A/500W DC Encoder, PWM Control Adjustable Speed Variable Rotary Switch PWM Signal Generator Module"
brand: "ec buying"
price: "AR$37201"
currency: ARS
in_stock: true
reviews_count: 8
category: "Ec Buying"
url: https://www.desertcart.com.ar/products/451688731-zk-bmg-dc-motor-speed-controller-dc-motor-controller-9v
store_origin: AR
region: Argentina
---

# 12A rated current, 20A max surge Compact 79x43x26mm size PWM adjustable frequency 1KHz-99KHz ZK-BMG DC Motor Speed Controller, DC Motor Controller 9V-60V/12A/500W DC Encoder, PWM Control Adjustable Speed Variable Rotary Switch PWM Signal Generator Module

**Brand:** ec buying
**Price:** AR$37201
**Availability:** ✅ In Stock

## Summary

> ⚙️ Take control of your motor’s speed like a pro — precision, power, and persistence in one sleek package!

## Quick Answers

- **What is this?** ZK-BMG DC Motor Speed Controller, DC Motor Controller 9V-60V/12A/500W DC Encoder, PWM Control Adjustable Speed Variable Rotary Switch PWM Signal Generator Module by ec buying
- **How much does it cost?** AR$37201 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/451688731-zk-bmg-dc-motor-speed-controller-dc-motor-controller-9v)

## Best For

- ec buying enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Integration:** Supports 9V-60V DC input with anti-reverse protection and versatile signal control for effortless industrial or DIY setups.
- • **Powerhouse Durability:** Robust 12A continuous current capacity with 20A peak, engineered to handle demanding motors with ease and longevity.
- • **Smart Memory Retention:** All settings saved instantly on power-off, so your custom configurations are always ready when you are.
- • **Precision Speed Mastery:** Digitally controlled PWM knob for ultra-fine motor speed tuning from 0-100%, ensuring flawless performance in critical applications.
- • **User-Friendly Interface:** Clear LED digital display and intuitive rotary encoder knob make adjustments quick, precise, and satisfying.

## Overview

The EC Buying DC Motor Speed Controller is a compact, high-performance PWM module designed for precise speed regulation of DC motors from 9V to 60V. With a rated current of 12A (max 20A) and power handling up to 500W, it features an adjustable frequency range of 1KHz to 99KHz and a digital encoder knob for fine-tuned control. Its memory retention stores all settings after power-off, while the LED display provides real-time feedback on duty cycle and frequency. Ideal for industrial, automotive, or hobbyist applications requiring reliable, customizable motor speed control.

## Description

EC Buying ZK-BMG DC Motor Speed Controller, DC Motor Controller 9V-60V/12A/500W DC Encoder, PWM Control Adjustable Speed Variable Rotary Switch PWM Signal Generator Module: desertcart.com: Industrial & Scientific

Review: Works Perfectly for my use case - I already reviewed this but here it is again. My use case was to provide variable speed control to a 12v Kamado Joe smoker air blower fan motor. I selected this PWM unit because the exterior design would look almost "factory" on my blower motor housing. The terminal block is well labeled and robust. The dial is a digitizer which makes it a lot more flexible. When I first tested this set up, the controller was not linear, meaning the fan didn't turn on until the dial was set above 20% power. After that, the motor speed ramped up to 100% at a setting of 50% on the digitizer. That would have worked but i wanted a very fine linear control as air flow on a KJ is critical to stable temps. I corrected this by inserting a 4.7 ohm 25-watt resistor on the + fan lead. It now works perfectly. The motor starts at 1% and ramps up to full speed at 100% dialed power setting. My motor only draws 1.5 amps so the 12A capacity of this unit indicates major over engineering so it should last a long time.
Review: Controls small trolling motor well - I bought this for a small trolling motor and I had reservations, but it said that it could handle 12 amps and that is way more than the motor I had so I thought I would give it a try. It works great so far, I now have infinite speed control from 0-100 percent, though below about 15% the motor isn't actually turning anymore. I've been meaning to test if I'm losing any speed by bypassing it completely, but I haven't had a chance yet. it just seems that with the small wire size and how small the controller is that it must lose some output potentially, but it definitely has been working well for speed control. I can turn it down and just follow the shoreline at a crawls casting into potential spots as cruise along or set my trolling speed where it feels right, so I love it so far.

## Features

- ♥Product parameters: 1. Working voltage: DC9V~60V, input anti-reverse connection protection 2. Rated current: 12A, maximum current 20A 3. Maximum power: 500W 4. Operating frequency: 1KHz~99KHz adjustable, 1KHz step, default frequency 20KHz, accuracy about 1% 5. Duty cycle: 0-100%, 1% step 6. Product size: 79mm*43mm*26mm Installation hole size: 39.3mm*76.5mm 7. Product weight: 43g (bare weight), 65.5g (with packaging) 8. All settable parameters are stored when power is off.
- ♥ Wiring Instructions: ① Motor start and stop indicator: start light on, stop light off ②Digital tube: display the duty cycle of motor adjustment, upper and lower limit of duty cycle and frequency ③Digital tube: Display the motor adjustment duty cycle, upper and lower limit of duty cycle and frequency" ④It can be connected to switch signal or 3.3V level signal to control the start and stop of the motor ⑤ Motor output positive and negative poles Power input positive and negative
- ♥ Digital encoder knob operation: ①In the default interface: (the default display is the duty cycle) Short press: switch the motor on and off. Press and hold for 10 seconds: enter the setting interface. Counterclockwise rotation: the duty cycle decreases. Clockwise rotation: increased duty cycle.
- ♥②Setting interface: Short press: select the setting parameter, the setting parameter can be switched between ON-OFF, duty cycle lower limit, duty cycle upper limit, and operating frequency. ON-OFF is the default module power-on normally open or normally closed, the lower limit of the duty cycle is displayed in the form of "L" + two digits, and the upper limit of the duty cycle is displayed in the form of "H" + two digits or "100", the operating frequency Displayed in the form of "+two digits".
- ♥STOP port on the back: It can be connected to external switch buttons or a 3.3V level. Do not use it in complex electromagnetic environments, and there is no relevant protection inside the circuit. (Note that the external switch should use a self-reset button or key, press it once to turn it on, and press it again to turn it off; it cannot realize the function of always closing the output to open, and not closing the output to close).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B393M4PS |
| Batteries required | No |
| Best Sellers Rank | #20,133 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Motor Speed Controllers |
| Customer Reviews | 4.3 4.3 out of 5 stars (92) |
| Display Type | LED |
| Item Weight | 1.52 ounces |
| Manufacturer | EC Buying |
| Product Dimensions | 3.11 x 1.69 x 1.02 inches |

## Product Details

- **Brand:** EC Buying
- **Color:** black
- **Item Weight:** 43 Grams
- **Material:** iron
- **Product Dimensions:** 3.11"L x 1.69"W x 1.02"H

## Images

![ZK-BMG DC Motor Speed Controller, DC Motor Controller 9V-60V/12A/500W DC Encoder, PWM Control Adjustable Speed Variable Rotary Switch PWM Signal Generator Module - Image 1](https://m.media-amazon.com/images/I/61-7NbmbDUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Perfectly for my use case
*by T***0 on January 14, 2026*

I already reviewed this but here it is again. My use case was to provide variable speed control to a 12v Kamado Joe smoker air blower fan motor. I selected this PWM unit because the exterior design would look almost "factory" on my blower motor housing. The terminal block is well labeled and robust. The dial is a digitizer which makes it a lot more flexible. When I first tested this set up, the controller was not linear, meaning the fan didn't turn on until the dial was set above 20% power. After that, the motor speed ramped up to 100% at a setting of 50% on the digitizer. That would have worked but i wanted a very fine linear control as air flow on a KJ is critical to stable temps. I corrected this by inserting a 4.7 ohm 25-watt resistor on the + fan lead. It now works perfectly. The motor starts at 1% and ramps up to full speed at 100% dialed power setting. My motor only draws 1.5 amps so the 12A capacity of this unit indicates major over engineering so it should last a long time.

### ⭐⭐⭐⭐⭐ Controls small trolling motor well
*by R***P on July 1, 2025*

I bought this for a small trolling motor and I had reservations, but it said that it could handle 12 amps and that is way more than the motor I had so I thought I would give it a try. It works great so far, I now have infinite speed control from 0-100 percent, though below about 15% the motor isn't actually turning anymore. I've been meaning to test if I'm losing any speed by bypassing it completely, but I haven't had a chance yet. it just seems that with the small wire size and how small the controller is that it must lose some output potentially, but it definitely has been working well for speed control. I can turn it down and just follow the shoreline at a crawls casting into potential spots as cruise along or set my trolling speed where it feels right, so I love it so far.

### ⭐⭐⭐⭐ Is what is advertised and works well so far.
*by H***Y on January 18, 2025*

Have already been using it. Won't give 5 stars until it shows longevity and not a burn out . The cabinet it's mounted in includes a cooling fan so I don't think it'll ever over heat especially when only .9 amps as its only loading at the moment and that won't change unless the motor goes bad maybe? A lot less room needed than for other motor speed controllers which was a plus. Maybe not as much power handling as larger units but not needed for my application. Display is bright and clear and the units control pot is very responsive. The connection terminals are better than others and look good. CAUTION! The wiring sticker on this controller was not matching the actual board designated polarities. Someone was reading upside down. Just peel and turn around. So far a good value if it doesn't crap out for no reason. Don't know any reason it would. One thing that I wish the companies producing these small panel mounts would produce and offer, an angled bezel for tilting them upwards or downward for easily reading when high or low. For my application I don't mind squatting or bending down to read but is not always practical and at my age sometimes painful. As my application of them has me tilting them upwards on the panel face. Top edge of the included bezel is touching the face of panel face and the bottom edge is approximately .250 inches from the face of the panel. This request has no bearing on the unit itself or it's rating from me. Personaly I don't own a three d printer or these would be pretty easy to print. Bottom line is so far so good and nice.

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-14*