Easy operation and micro processor control. Speed, temperature and time are displayed on the LCD screen. Alternating current (AC) brushless motor of high torque and short acceleration / deceleration (acceleration / Deceleration) has time. Electronic door lock, over speed and over temperature protection functions for safe operation. 3-step protection arms for human and device safety. Alternative head option for practical use. CFC-free refrigeration system for environmental protection (France Tecumseh Compressor Unit) Biochemistry, bio-pharmaceutical, widely used in such areas as blood separation. Warning system against unbalanced loads.