Features Speed Control: Achieve precise and linear motor speed adjustment with simple , providing optimal control over your motor's performance. Easy Switching: Effortlessly switch the motor between clockwise (CW) and counterclockwise (CCW) rotation using the 3-gear rocker switch for enhanced versatility. Stable Working: Built-in brushless fan ensures rapid cooling and stall protection, promoting reliable and stable motor . Input Voltage: Ensure compatibility by matching the input voltage to the motor's rated voltage within the 10-55V DC range, guaranteeing optimal performance. Simple Wiring: Quickly and flexibly connect the controller with the motor using the barrier terminal, simplifying the setup process for ease of use. Specification: Item Type: DC Motor Speed Controller Model: EW87 Input Voltage: DC10-55V Output Current: 0-40A Continuous Power: 2000W Speed Regulation Type: Current regulation. Speed Regulation Method: Potentiometer (linear). Speed Adjustment Range: 0-100% Control Frequency: 25kHz CW Rotation and CCW Rotation: Yes (3 gear rocker switch). Wiring Type: Barrier terminal. Package List: 1 x DC Motor Speed Controller Note: The input must be divided into positive and negative, the input voltage must be equal to the rated voltage of the motor, and 220V household electricity cannot be input. Package List 1 x DC Motor Speed Controller