High Locking Strength:Shear locks provide very high locking strength by combining electromagnetic and mechanical shear forces, making them difficult to forcibly breach No Mechanical Wear:Since shear locks rely primarily on magnetic force, there is no mechanical wear like in traditional mechanical locks, leading to a longer lifespan Fast Response:Shear locks can lock and unlock quickly, making them suitable for situations requiring rapid access control Concealed Installation:Shear locks can be installed discreetly within the door frame or door leaf, maintaining the aesthetic design of the door Electromagnet: The shear lock contains a powerful electromagnet. When an electric current passes through it, the electromagnet generates a strong magnetic field that locks the door Welcome and I wish you a happy life, my friend., Weight: 4.40924524 pounds, Manufacturer: JOLIANE