This is the 12V variant of the 12V 24V 36V 40A PWM DC Motor Speed Controller Forward Reverse Adjustable Knob Switch with Case in Brushed / Brushless DC motor Driver. Available at ₹1,139.88 (₹966.00 + GST) with free shipping across India.
The 12V/24V/36V 40A PWM DC Motor Speed Controller with Forward/Reverse and Adjustable Knob Switch is a high-power, reversible motor controller designed for efficient motor performance management. It provides precise control over electric motors, allowing you to start and stop the motor, select forward or reverse rotation, adjust speed, regulate torque, and protect against overloads or faults.
This 40A PWM controller is equipped with high-power automotive relays for durability, a knob to adjust the output voltage, and a toggle rocker switch to switch the motor’s rotation direction (forward or reverse). Additionally, it features a 3-digit seven-segment LED display that shows the selected voltage for easy monitoring and control.
Connections:
Features:
- Input voltage: DC12 to 36V (equal to the rated voltage of the motor)
- Output voltage: linear underload
- Maximum current: 50A
- Continuous current: 40A
- Speed regulation type: current regulation
- Speed regulation mode: potentiometer (linear)
- Support motor: DC brush motor
- Rotation: Toggle Forward and reverse
- Speed range: 0——100%
- Wiring type: terminal Knob
- Potentiometer: 100K (with switch)
- Wiring type: fence terminal block
- Product weight: 173g
- Board Dimensions (L x W x H) mm: 100 x 76 x 28
Specification
| Item Type: | Motor Rotation Controller Board, PWM Speed Regulator |
|---|---|
| Current Rating (A): | 40 |
| Voltage Rating (V): | 12 to 36 |
| Output Voltage(V) | linear underload |
| Maximum current(A) | 50 |
| Continuous Current (A): | 40 |
| Speed regulation mode | potentiometer (linear) |
| Compatible Motor | DC brush motor |
| Rotation | Toggle Forward and reverse |
| Speed range(%) | 0——100 |
| Wiring type | terminal Knob |
| Potentiometer | 100K (with switch) |
Package Includes:
1 x PWM DC Motor Speed Controller Forward Reverse Adjustable Knob Switch with Case
Technical Specifications
| Voltage Range | 12V - 36V |
|---|---|
| Current Rating | 40A |
| Interface / Protocol | BLE |
| SKU | AI6229 |
| Weight | 0.31 kg |
| Availability | In Stock |
Applications & Use Cases
The 12V 24V 36V 40A PWM DC Motor Speed Controller Forward Reverse Adjustable Knob Switch with Case is a versatile brushed / brushless dc motor driver used across a wide range of applications including robot motor control, DC motor speed regulation, H-bridge circuits, electric vehicle drives, and conveyor belt control.
Common use cases:
- Bidirectional motor control for a robot
- PWM speed control of a DC motor
- Building a motorized platform
This product is ideal for robotics engineers and motor control enthusiasts.
Technical Tip: L298N is a classic dual H-bridge driver. For higher efficiency, consider MOSFET-based drivers like BTS7960.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components

Tarun Parekh –
Superb 12V 24V 36V 40A PWM DC! Torque is exactly as specified. My project runs perfectly with this.
Nitin Bhat –
Love this 12V 24V 36V 40A PWM DC. Silent operation and consistent speed. Worth every rupee.
Ishan Pandey –
Pretty good 12V 24V 36V 40A PWM DC. Using it in my conveyor project. Performs reliably.
Aryan Bhatt (verified owner) –
Very satisfied with this 12V 24V 36V 40A PWM DC. My robotic arm moves precisely with this motor.
Sahil Singh (verified owner) –
Great quality 12V 24V 36V 40A PWM DC. Shaft is precise and bearings are solid. No vibration at all.
Vipin Tiwari (verified owner) –
Great quality 12V 24V 36V 40A PWM DC. Shaft is precise and bearings are solid. No vibration at all.
Arjun Rawat (verified owner) –
Bought 4 of these for my robot. All working identically. Excellent consistency.
Ravi Bajaj (verified owner) –
Bought 4 of these for my robot. All working identically. Excellent consistency.
Raghav Bose –
Love this 12V 24V 36V 40A PWM DC. Silent operation and consistent speed. Worth every rupee.
Jatin Nayak –
Great 12V 24V 36V 40A PWM DC. Mounting holes are accurate and the shaft fits perfectly with my coupling.
Sanya Rao (verified owner) –
This 12V 24V 36V 40A PWM DC exceeded expectations. RPM is as advertised, very smooth operation.
Naman Tandon (verified owner) –
This 12V 24V 36V 40A PWM DC exceeded expectations. RPM is as advertised, very smooth operation.
Naman Sharma –
This 12V 24V 36V 40A PWM DC is ideal for precision applications. Very happy with the purchase.
Neha Deshpande (verified owner) –
Good quality 12V 24V 36V 40A PWM DC. Minor vibration at high speed but acceptable for my project.
Siddharth Pandey (verified owner) –
Good 12V 24V 36V 40A PWM DC. Runs well but generates a bit of heat under full load.
Eshan Goyal –
Perfect 12V 24V 36V 40A PWM DC for my automation project. Speed control works beautifully.
Utkarsh Bhat (verified owner) –
Pretty good 12V 24V 36V 40A PWM DC. Using it in my conveyor project. Performs reliably.
Manoj Kulkarni (verified owner) –
Excellent 12V 24V 36V 40A PWM DC! Smooth rotation and good torque. Perfect for my robot.
Sakshi Rajan (verified owner) –
Excellent 12V 24V 36V 40A PWM DC! Smooth rotation and good torque. Perfect for my robot.
Vansh Rawat (verified owner) –
Excellent 12V 24V 36V 40A PWM DC! Smooth rotation and good torque. Perfect for my robot.
Chitra Luthra (verified owner) –
Bought 4 of these for my robot. All working identically. Excellent consistency.
Arnav Dhillon (verified owner) –
This 12V 24V 36V 40A PWM DC runs very smoothly. Using it in my CNC project, very reliable.
Sandhya Sethi (verified owner) –
Average 12V 24V 36V 40A PWM DC. Works but the torque is slightly less than specified.
Rajesh Malhotra –
Nice 12V 24V 36V 40A PWM DC. Torque is decent. Mounting was easy. Good value for money.
Manish Bhat –
Great 12V 24V 36V 40A PWM DC. Mounting holes are accurate and the shaft fits perfectly with my coupling.