EN 1303：2015 Double opening one-way anti technical opening European style lock cylinder

The double-opening and one-way anti-tech opening European-style lock cylinder is a kind of lock cylinder. When the key is inserted into the outer lock cylinder, the door lock can be controlled in one direction, and the door lock can be opened and closed normally. When the key is inserted in both the outer and inner locking cylinder, the outer locking cylinder rotates in idle mode and cannot open the door lock, thus realizing the inner insurance of the lock cylinder and improving the safety performance of the inner insurance to meet the needs of users who need inner insurance. This function is a built-in part and is available on request. The lock cylinder is designed to meet the European standard EN1303 for door locks. Patent number: ZL 202021638215.3