Enhanced Durability: Crafted with a robust circuit board, this PWM motor speed controller ensures stable performance and longevity. It features a digital encoder button for precise adjustments, offering both durability and high accuracy in speed modulation.Versatile Performance: Capable of handling input voltages from 6V to 60V and supporting a maximum output current of 30A (20A continuous), this controller allows for a fully adjustable duty cycle from 0% to 100%, catering to a wide range of motor types and applications.User-Friendly Installation: Equipped with a grid terminal block and intuitive button design, this device offers adjustable slow start and stop times, and speed limits. It supports frequency adjustments from 1-100 kHz, making installation and operation straightforward.Safety Instructions: Ensure correct polarity when connecting to power sources; the controller is not compatible with 220V input. Match the input voltage with your motor's rated voltage to avoid damage and ensure optimal performance.Broad Application: Ideal for controlling the speed of DC motors, fans, and aquarium oxygen pumps within a 6-60V range. The motor speed controller is a versatile tool for various electronic speed control needs, enhancing the functionality of numerous devices.Colour:Photo ColorMaterial:Metal + PlasticPackage Contents:4 x DC motor speed regulatorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.