Feature: 1. Multiple Functions: The motor speed controller features a multifunctional design with 11 functions, meeting various usage needs, simple operation, and greatly improving work efficiency. 2. Safe Operation: The motor speed regulator has current monitoring and overload guard functions, ensuring the security of the motor and equipment, and extending its service life. 3. Flexible Use: The remote control motor speed controller is convenient for users to operate remotely, with high flexibility and suitable for motor control needs in different scenarios. 4. Display and Button: The motor speed governor adopts LCD digital display, providing clear and intuitive readings. It is operated with button and knob, which is simple and convenient. 5. Built in Battery: The remote control is powered by a CR2032 button battery, with a capacity of 220mAh to ensure long term use, making it convenient for you to control the motor anytime, anywhere. Specification: Item Type: Motor Speed Controller Material: ABS Remote Control Battery: 1 x CR2032 Button Battery, Capacity: 220mAh (built in) Input Voltage: DC 6-55V Maximum Current: 20A Display Method: LCD Digital Display Speed Control Method: Button and Knob Installation Method: Embedded Wiring Type: Fence Type Terminal . Package List: 1 x Speed Controller 1 x Remote Controller 1 x User Manual