Durable circuit board for longer service life. This controller uses a robust PCB design to enhance reliability over time. Simple and easytouse DC motor speed controller with stable performance and an elegant appearance. Easy operation without sacrificing consistent results. Well designed case that protects the controller board from damage and helps dissipate heat. Quietly improves durability and thermal management in use. Includes direction control to set the motor rotation, enabling reversing the motor's direction. Flexible control for varied mechanical setups. Function and compatibility: designed for DC motors, suitable for hobby electronics, robotics, and small automation projects that require speed adjustment and reversible rotation. Use scenarios: DIY robotics projects and educational kits that need controllable motor speed and the ability to reverse direction. Small RC or model vehicles and moving parts where smooth speed control and reliability are important. Lightweight automation or belt/linear actuator applications that require simple speed adjustment and motor reversal.