The PWM motor speed controller is designed to handle various voltage inputs, making it suitable for different types of motors. Its adjustable speed control feature ensures that users can achieve the desired performance for their specific needs. Features -Color:Green -Material:Metal -Size:5.50X3.50X2.50cm/2.16X1.38X0.98in -Wide voltage adjustment: the 1803bk pwm controller offers adjustable voltage settings from 1.8v to 12v, catering to various motor speed requirements -Easytouse a userfriendly switch function simplifies the process of controlling motor speed -Stable performance: with a 2a capacity, this controller ensures reliable and stable motor operation, protecting the motor from damage -Enhanced productivity: precise speed control allows for motor performance, improving overall work efficiency -Multiple applications: this versatile controller is ideal for use in mechanical equipment, electronic devices, and Package list: 15 x PWM DC Motor Speed Controller