Low noise, low power consumption Brushless material with , high , high torque, high efficiency, and precise pulse control No need for disassembly and assembly, more stable motor, intelligent sensing left and right opening, true mechanical key. Double hook lock tongue design, Sliding doors, parallel sliding doors, partition doors, and sensor doors can all be installed. Add any number of numbers before and after the real password. Let you open the door without worries., Manufacturer: Akfldms