Features: 1. This drive is a DC three-phase brushless Hall control board motor without Hall can work normally. 2. This drive works when it is powered on, without external signals, and has its own potentiometer stepless speed regulation (the key model realizes acceleration and deceleration through a single key). 3. Compared with the traditional AC motor, three-phase brushless DC electric adjustable higher efficiency, can greatly save power usage. 4. The three-phase DC brushless electric regulator has the characteristics of low-frequency low-torque and high-frequency high-torque, which can adapt to the needs of various working conditions. 5. ESC is specially developed and designed for industrial control electric tools such as air pumps,water pumps,oil pumps,fans, etc. that use DC three-phase brushless motors. The default is medium timing and long-time high-current operation. Jianyijia fan cooling does have overheat protection. The poor external heat dissipation conditions of the ESC automatically reduce the power when the temperature exceeds 100 degrees, and the temperature return to normal when it drops to 100 degrees. Color: As shown Material: plastic Package Contents: 1Pc Brushless Motor Driver 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.