亚洲成在人线av丨毛片免费视频丨日本护士╳╳╳hd少妇丨亚洲欧美综合区丁香五月小说丨伊人久久大香线蕉av最新

Motor driven mute electric bolt,the bolt is controlled by motor drive to realize lock and unlock. The driving force of the motor is very strong,the bolt can be pushed out by the powerful thrust of the motor to align the door when the door is deformed or misaligned. The parts are made of lightweight materials, work more smoothly, less resistance, can achieve mute when lock and unlock.The PCB is equipped with an electronic protection device to realize the precise control of locking and unlocking. In addition,compared with the traditional electric bolt which uses electromagnet to lock, which is low power consumption, energy saving and environmental protection.