Description: It's a PWM speed controller so it enables you to control the speed of these little DC brush motors smoothly. It's perfect for applications like fans, etc. providing nice adjustment of motor speed instead of the more usual "High-Low" switching Features: Wide range of operating voltage: 12V, 24V, 36V, 60V A good speed controller for DC brush motors High-frequency capacitance, power tube and 10A fuse are used in the module Adopts sealed and high-quality potentiometer with switch, stable performance Metal case creates better durability; high efficiency and low noise Suitable for applications like fans, etc. providing nice adjustment of motor speed Specifications: Operating Voltage: DC 10-60V Rated Current: 8A Max. Current: 10A Control Power: Maximum. 400W speed Control Range: 0% -100% PWM Frequency: 21KHz Item Size: 73 * 39 * 31mm Package Includes: 1 * DC Motor speed Controller