This dc motor speed controller is made of selected material, which can withstand use. Features the selected material, which has high durability, not easy to deform. Fine workmanship, practicality. Characterized by a sturdy and reliable texture, not easy to break, serving you for a long time. Features -Color:Multi -Material:Plastic -Size:4.70X2.50X1.30cm/1.85X0.98X0.51in -Supply voltage: 5-16V -Continuous current: 10A -Duty ratio: 0%- -Efficiency: 98%(max) -Wide voltage input range of 5v-16v for compatibility with various power supplies. -Characterized by a sturdy and reliable texture, not easy to break, serving you for a long time. - Features the selected material, which has high durability, not easy to deform. -Equipped with a speed switch for easy and quick motor speed adjustment. -Suitable for a wide range of applications, including led dimming and motor speed control. Package list: 5 x DC Motor Speed Controller