Plug lock is a kind of lock, generally used for shop door locks, belonging to the larger locks, is the lock and lock plate with the use of insertion and retrieval of the box lock. Extremely common in the plug lock is the electric plug lock, electric plug lock is a kind of electronic control locks, through the current drive "latch" out or retracted to achieve the function of locking or opening the door. Of course, close the door to open the door function needs to be achieved with the "magnetic disc" to achieve.