BETTER STRUCTURE: No gearbox, using safer direct drive technology SMOOTHNESS CONTROL: unit with Vector Control Algorithm, more smooth SAFETY :Precise control of opening and closing force, rapid rebound reaction when encountering resistance, easy reverse push, safety anti-pinch ULTRA QUIET :No transmission structure friction, the door machine runs comfortably and quietly AUTO LEARNING: Self-learning stroke after power-on, adaptive control operation path, mobile phone debugging, low maintenance cost EASY OPERATION :Support pre-factory debugging settings, convenient installation without threshold