--- product_id: 168554486 title: "DC Motor Speed Controller 10V-55V 12V 24V 36V 40A Stepless DC Motor Speed Controller with Forward-Brake-Reverse Switch,Ajustable Potentiometer &Digital Display" price: "142.52 DT" currency: TND in_stock: true reviews_count: 8 url: https://www.desertcart.tn/products/168554486-dc-motor-speed-controller-10v-55v-12v-24v-36v-40a store_origin: TN region: Tunisia --- # 10V-55V wide voltage range Digital speed display 0-100% Forward-Brake-Reverse switch DC Motor Speed Controller 10V-55V 12V 24V 36V 40A Stepless DC Motor Speed Controller with Forward-Brake-Reverse Switch,Ajustable Potentiometer &Digital Display **Price:** 142.52 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Master your motor’s speed and direction like a pro—control that commands respect! ## Quick Answers - **What is this?** DC Motor Speed Controller 10V-55V 12V 24V 36V 40A Stepless DC Motor Speed Controller with Forward-Brake-Reverse Switch,Ajustable Potentiometer &Digital Display - **How much does it cost?** 142.52 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/168554486-dc-motor-speed-controller-10v-55v-12v-24v-36v-40a) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Speed Control:** Stepless potentiometer lets you dial motor power with precision from 0 to 100%, ensuring smooth acceleration and deceleration. - • **Instant Direction Switching:** Forward, brake, and reverse modes accessible via a single switch for effortless bidirectional motor control. - • **Real-Time Performance Feedback:** Integrated digital display shows exact motor speed percentage, keeping you informed and in command at all times. - • **Robust & Heat-Resistant Design:** Durable outer casing protects internal components and dissipates heat efficiently, built to withstand demanding environments. - • **Versatile Voltage Compatibility:** Supports a broad DC input range of 10V to 55V, perfect for 12V, 24V, 36V systems—adaptable to your evolving projects. ## Overview This DC Motor Speed Controller offers stepless speed adjustment from 0 to 100% with a wide input voltage range of 10V to 55V and supports continuous current up to 40A. Featuring a forward-brake-reverse switch and a clear digital display, it provides precise, real-time control for brushed DC motors. Its sturdy casing ensures durability and heat dissipation, making it ideal for professional-grade motor management in various applications. ## Description 12V 24V 36V 40A DC Motor Speed Controller Forward Reverse Digital Display Adjustable Knob Switch Plus Control Driver Features: Motherboard size: 100*76*28MM； Shell size: 110*78*38MM Brand New and high quality Forward & Reverse: Support Regulation Method: Potentiometer with switch PWM frequency: 15KHZ Wiring Type: terminal Knob Rotary Knob: 100K(with switch) Suitable for: Brushed DC motor Bidirectional rotation: setting direction of rotation is optional, which means that accomplishes reversing the motor's direction Note: The digital display is the motor full speed percentage 0-100 non-motor actual speed Package Including: 1 x DC Motor Speed Controller Review: Works perfectly with smooth control output - Installed as part of a modification on a ride-in car for a very cautious 2.5 year old. This single speed 4WD jeep in stock condition was too fast for the student driver. I also added the capability to run the motors on 20V lithium drill batteries, using some relays and a "buck converter" (actually 18 bucks on desertcart) to reduce the voltage to 12V going to the stock controller box to avoid blowing out the radio and lights. I fantasize about using my 56V E-Go battery packs some day, so I chose a converter rated for up to 60V input (https://www.desertcart.com/gp/product/B08HS19W8Z/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 ). The Tatoko hardware is well-built and solid. The output varies smoothly with the control knob (as judged by motor speed). The duty cycle indicator corresponds well to the average output voltage as measured by a multimeter; 70% duty cycle on 20V input batteries provides 14V output. This controller has a Forward-Brake-Reverse (F-B-R) rocker switch, which I believe is pretty much required for this type of application, since my understanding is that you cannot reverse the Input polarity on a PWM controller, so you will be replacing the stock F-B-R in the dash with the one provided with this controller. No extended tests, but the controller worked perfectly with me riding on the vehicle. Highly recommended. Some nits to pick with installation: It would be helpful to provide a packet of mounting screws and maybe a little paper template to locate mounting holes. Most garage mechanics won't have tiny metric screws lying around unless they've also worked on computers and electronics. The duty cycle indicator has no provisions for mounting. If you search for the part number, you can see that similar indicators are available with little mounting tabs. I marked and carefully cut the rectangular outline, taped it in place temporarily from the front, and used hot melt glue to secure it from the back. The rocker switch is smaller than the ones used on kids toys, so I needed to fabricate a plate to replace the stock F-B-R switch in the dash. The wire leads are also fairly short, providing limited mounting options. It would have been preferable to be able to mount the unit in the battery and controller compartment with wire leads running to the dash, as opposed to mounting the entire unit with short leads to the back of the dash. Finally, PWM controllers work by "chopping up" the DC output into a series of pulses. My multimeter read the average voltage, but the dash voltmeter flickers uncontrollably below about 70% duty cycle. It would be a nice feature to include a noise-free voltage output. Review: works amazingly great for my use! - This controller works amazingly great! My electric trailer dolly/mover stopped working, so I tried out this controller and it now works perfectly. This controller has forward and reverse with just a push of a switch. The power is controlled by the round dial. The digital display indicates how much power goes into the electric motor. Super easy to install and super easy to use. I reccomended this to anyone. 5 stars! ## Features - Input supply voltage: DC 10V-55V；Maximum current: 60A； Continuous current: 40A;Speed range: 0-1oo% - Potentiometer with switch function,High power speed controller switch which is much more adaptable - DC10V-55V PWM Brushed DC Motor Speed Controller Adjustable Driver CW CCW Reversible Switch With Digit Display - Outer casing: it is designed to protect the controller board from damage as well as dissipate heat - The input voltage must differentiate "+" ,"-",The input voltage should be equal to the rated voltage of the motor within 10-55V,or it will be burnt. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Y73MN5R | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #263,206 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #198 in Electrical Motor Controls | | Customer Reviews | 4.1 4.1 out of 5 stars (305) | | Date First Available | September 22, 2019 | | Item Package Quantity | 1 | | Item Weight | 9.5 ounces | | Manufacturer | tatoko | | Material | copper | | Package Dimensions | 5.16 x 3.74 x 3.35 inches | ## Images ![DC Motor Speed Controller 10V-55V 12V 24V 36V 40A Stepless DC Motor Speed Controller with Forward-Brake-Reverse Switch,Ajustable Potentiometer &Digital Display - Image 1](https://m.media-amazon.com/images/I/51itoplG1-L.jpg) ## Questions & Answers **Q: Does the Potentiometer control the voltage or amperage?** A: Amps. **Q: I have a transformer that will provide 36 volts and 10 amps powering a full wave bridge. Would the wave form of the rectified power cause an issue?** A: Probably not but i have not tried it. If there was a problem you could parallel a capacitor with the 36 volts to filter the noise. **Q: Is 100% command equivalent to running the motor directly connected to the power supply? My motors are not running as fast as expected.** A: There will be voltage drop, it cannot be helped. There will always be resistances to the circuit, series-pass element(s), the circuit board itself, etc, so you will always lose something. If you need true 100% then you'll have to resort to a bypass relay for a "max" setting when required. **Q: There is no fuse inside. What happens when it's overloaded? You must purchased another one? The 30a model at least has a 30a fuse inside the PCB.** A: If you overload it, it's gonna fry the circuits everytime.I've bought a few of these just to experiment with. I've also blown up a few. For the price, they're great speed controllers if you use them properly. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works perfectly with smooth control output *by R***Y on April 2, 2022* Installed as part of a modification on a ride-in car for a very cautious 2.5 year old. This single speed 4WD jeep in stock condition was too fast for the student driver. I also added the capability to run the motors on 20V lithium drill batteries, using some relays and a "buck converter" (actually 18 bucks on Amazon) to reduce the voltage to 12V going to the stock controller box to avoid blowing out the radio and lights. I fantasize about using my 56V E-Go battery packs some day, so I chose a converter rated for up to 60V input (https://www.amazon.com/gp/product/B08HS19W8Z/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 ). The Tatoko hardware is well-built and solid. The output varies smoothly with the control knob (as judged by motor speed). The duty cycle indicator corresponds well to the average output voltage as measured by a multimeter; 70% duty cycle on 20V input batteries provides 14V output. This controller has a Forward-Brake-Reverse (F-B-R) rocker switch, which I believe is pretty much required for this type of application, since my understanding is that you cannot reverse the Input polarity on a PWM controller, so you will be replacing the stock F-B-R in the dash with the one provided with this controller. No extended tests, but the controller worked perfectly with me riding on the vehicle. Highly recommended. Some nits to pick with installation: It would be helpful to provide a packet of mounting screws and maybe a little paper template to locate mounting holes. Most garage mechanics won't have tiny metric screws lying around unless they've also worked on computers and electronics. The duty cycle indicator has no provisions for mounting. If you search for the part number, you can see that similar indicators are available with little mounting tabs. I marked and carefully cut the rectangular outline, taped it in place temporarily from the front, and used hot melt glue to secure it from the back. The rocker switch is smaller than the ones used on kids toys, so I needed to fabricate a plate to replace the stock F-B-R switch in the dash. The wire leads are also fairly short, providing limited mounting options. It would have been preferable to be able to mount the unit in the battery and controller compartment with wire leads running to the dash, as opposed to mounting the entire unit with short leads to the back of the dash. Finally, PWM controllers work by "chopping up" the DC output into a series of pulses. My multimeter read the average voltage, but the dash voltmeter flickers uncontrollably below about 70% duty cycle. It would be a nice feature to include a noise-free voltage output. ### ⭐⭐⭐⭐⭐ works amazingly great for my use! *by T***D on September 21, 2020* This controller works amazingly great! My electric trailer dolly/mover stopped working, so I tried out this controller and it now works perfectly. This controller has forward and reverse with just a push of a switch. The power is controlled by the round dial. The digital display indicates how much power goes into the electric motor. Super easy to install and super easy to use. I reccomended this to anyone. 5 stars! ### ⭐⭐⭐⭐ Does what advertised *by H***Y on January 18, 2025* Only four stars until I know how it holds up. My only real complaint would be that the pretty case it is in is a universal case and not specific to the board. Who cares for the price point. It's still secure but in heavy vibration and bouncing around the case may not offer the needed secure hold you might need. Fortunately I have the option to mount the board in the tool with out the need of the case also allowing me to add some shock avoidance to the mounting holes on the board and push better air around the sink. I've tested full rpm load of my motor with and without the controller and if it's hendering rpm or power at full speed then I can't tell by just observation. It's not hendering torque at ranges of 0 to 100. I have no rpm gauge so I don't know positive response but it appears to be close to correct. As far as full amp loads, I'll probably never need to pull that much amperage but I'm sure it'll handle it for a while without a fan for some cooling. However that's the thing I did. Added a muffin fan to the case for testing and after mounting with out the case in its racking it's got air moving around it better than inside the case it's in. Was easy to hook up but polarities were backwards on output. Read the actual board not the sticker for output polarities. The paper was was backwards on cw CCW hook up as compared to the board and the motor was a nema 17 and it proved it was backwards on wiring diagram. No biggie and I'm used to this phenomenon. It's seems like a lot of electronics from China are like this. But their still doing better than if I were trying to read Chinese and get it right. And this particular board smells like it's been heated up and smoked but that really not the case. Not for sure why the burnt smell. This is a little concerning as to holding up on use. Hopefully it's just the manufacturer process. ## Frequently Bought Together - tatoko DC Motor Speed Controller 10V-55V 12V 24V 36V 40A Stepless DC Motor Speed Controller with Forward-Brake-Reverse Switch,Ajustable Potentiometer &Digital Display - 10AWG Adapter for 40V Ryobi Lithium-ion Battery Dock Power Connector Wire Robotics --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/168554486-dc-motor-speed-controller-10v-55v-12v-24v-36v-40a](https://www.desertcart.tn/products/168554486-dc-motor-speed-controller-10v-55v-12v-24v-36v-40a) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-07*