1、VCC GND motor main powersupply (external Direct-Current powersupply). 2、SCspeed pulse signal output. 3、Positive and negative reversing control interface (also can be connected to the external switch). 4、VRspeed control signal input (onboard with potentiometer speed control can also be connected to 0-5V AnalogSimulation PWM duty cycle to support dual signal input speed regulation). 5、Full patch process Stable performances with positive/reverse function. Newly upgraded BLDC with a wide voltage of 6-60V, high power of 400W, three-phase brushless Direct-Current with Hall controller, supporting PLC 0-5V AnalogControl, PWM control, amplitude of 2.5-5V, humanized design, interface using terminal standard heat sink integrated with speed regulation potentiometer on the board, which can be used when powered on by hand, saving time and effort. Features: 5V GND motherboard comes with 5V powersupply (current does not exceed 30MA). VCC GND motor main powersupply (external Direct-Current powersupply). SCspeed pulse signal output. Positive and negative reversing control interface (also can be connected to the external switch). VRspeed control signal input (onboard with potentiometer speed control can also be connected to 0-5V AnalogSimulation PWM duty cycle to support dual signal input speed regulation). Full patch process Stable performances with positive/reverse function. Specifications: Working voltage: 6-60V Current: max. 20A, load. 16A Power: max. 400W Item size: 63 * 45 * 31mm / 2.5 * 1.8 * 1.2in Item weight: 77g / 2.7ounce Package size: 70 * 50 * 35mm / 2.8 * 2.0 * 1.4in Package weight: 90g / 3.2ounce Package List: 1 * Hall Motor Control Driver Board 1 * Hall Motor Control Driver Board