The 25121WF0391T4E is a 4-Pin 12Vdc 10A PWM Motor Control Module from Royal Ohm. This motor control module is designed to provide increased accuracy and control of motorized devices using pulse width modulation (PWM) technique. The module is designed to optimize the motor operation while minimizing noise and vibration. It can be used in applications such as motor speed control, motor current control, and variable speed rotation control. The module features a variable speed control range from 0.01Hz to 10KHz. It also features adjustable current limit, selectable amplifier gain, and variable timing for over and under current protection. The PWM modulator can be adjusted for variable speed responses, and has status LED indicators for over and under voltage as well as motor current detect. The module can also be used in applications such as motor feedback control, motor start & stop, DC motor control, and speed regulation.