STYLISH APPEARANCE: This is a simple and easy-to-use DC motor speed controller with small size, elegant appearance and stable performance. This speed controller has a delicate and practical case which is waterproof so you can use it outdoors CONVENIENT WIRING: Comes with a screw terminal block and a label showing power and motor electrodes for convenient wiring. The controller input of DC motor is connected to DC current, can not be connected to AC current, otherwise it will be burnt LONG LIFE: Made with high quality circuit board which ensures long life. longer life The input voltage can be between 10V and 60V, and the output voltage is between 0 and 100% of the input voltage. This speed controller is very convenient to adjust Make sure the positive and negative polarities are connected correctly. ected, otherwise the controller will be damaged. Suitable for 12V motors with power less than 120W, 24V motors with power less than 240W, etc. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!