Feature: 1. High Accuracy Simulation Tachometer: DC motor governor achieves real time monitoring of motor speed to ensure stability and safety. And you can make adjustments timely. 2. Intelligent Speed Control: Automatically adjust motor speed as needed, energy saving, environmentally friendly, and improving work efficiency. 3. Adjustable Speed Settings: Adjust motor speed through buttons and knobs, this motor governor is suitable for various DC motor types. 4. Work Details: Motor speed regulator is made of premium ABS material with a working voltage DC 6‑55V, maximum current 30A, 4 digit display, control frequency 15KHZ, embedded installation. 5. Easy To Install: Electric motor speed controller has an innovative all in 1 design, no additional installation required. Easy to operate for convenient use. Specification: Item Type: DC Motor Governor Material: ABS Input Voltage: DC 6-55V Maximum Current: 30A Display: 4 digit LED Display Speed Control Type: Current Regulation Speed Control Method: Button and Knob Control Frequency: 15KHz Installation Method: Embedded Wiring Type: Barrier Terminal. Package List: 1 x Speed Controller 1 x User Manual