12V-48V 10A DC Motor Adjustable Speed Controller Regulator Motor Speed Tool Feature: Waterproof, anti-leakage enclosure, high power drive module. The potentiometer comes with a switch, more convenient and safe to use. Fine workmanship and good performance. Stable and reliable. Durable in use. Specification: Brand new Size: approx. 88*59*35mm Input voltage: DC 10V-60V Recommended voltage: DC 12V-48V Control power: 12V-120W; 24V-240W Rated persistent current: 10A Max. current: 20A Speed control range: 5%-100% Switching frequency: 25KHz Potentiometer: Tape switch, B100K Package included: 1 x Speed Controller Note: This module is a speed controller, not the converter, and can not change voltage. It can not connect to the AC 220V power supply. The input voltage should be DC power, current and voltage shall be in accordance with the specified value. Positive and negative poles of power supply can not be reversed. The positive and negative poles of the motor can be reversed. Please allow 1-5mm due to manual measurement. Item colour displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated the same.