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 Shear Force: In addition to the magnetic force, the shear lock utilizes the shear force between the door and the door frame to increase locking strength. This means that even if the electromagnetic force fails (such as during a power outage), the mechanical shear force can still provide a level of security Shear locks provide very high locking strength by combining electromagnetic and mechanical shear forces, making them difficult to forcibly breach Since shear locks rely primarily on magnetic force, there is no mechanical wear like in traditional mechanical locks, leading to a longer lifespan, Manufacturer: Akfldms