PANIC EXIT DEVICE, that is, fire escape lock, also known as push lock, alarm escape lock, fire lock, escape lock. It is mainly used to protect emergency exits, shipping and receiving doors, security doors, internal access doors, etc. It has been widely used in airports with emergency exits, public transportation systems, banks, securities, command centers, hospitals, supermarkets, and commercial offices. Buildings, hotels, large shopping malls, municipal buildings, government agencies, etc.