This controller is a three-phase brushless and Hall-less control board. The motor can run normally without Hall sensors. This 3-phase brushless DC controller features a wide voltage range of 6-26V, high power, and compact size. The potentiometer speed adjustment version supports 0-4.5V PLC analog signal stepless speed adjustment. Unlike model airplane ESCs, this potentiometer speed control allows the motor to rotate directly upon power-up by turning the potentiometer clockwise, without needing throttle adjustment or an external speed control signal. The speed is continuously adjusted via the potentiometer on the ESC. Clockwise increases speed, and counter-clockwise decreases it. It's also suitable for external PLC 0-5V analog voltage signal control. To use, remove the potentiometer and connect the external analog control signal 0-5V and ground respectively to the input signal terminal on the brushless drive board (black ground, red signal input), ensuring two wires are connected correctly. UVW phase line output connected to the motor; Main power supply VCC GND (external DC power supply) Working voltage: 6-20V (limit 26V) suitable for 2-6S lithium battery Drive current: Rated 16A, 25A with fan cooling Power: rated 160W-200W, peak 250W Maximum speed: 224,000 / min (2-pole motor), 74,000 / min (6-pole motor), 40,000 / min (12-pole motor), 35,000 / min (14-pole motor). Product size: length 36MMxwidth 26MMxheight 10MM (excluding protruding wires and capacitors) Material: plastic Color: Black Package Contents: 2 x Brushless ESC Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm.