George Risk Industries MS180 3/4 in. Recessed Steel Door Contact

Monitor door position from a recessed installation with a steel closed-loop contact using Magnasphere technology. The 3/4 in. recessed format places the contact within the door and frame rather than on the surface, supporting installations where exposed sensing hardware is undesirable. Closed-loop operation supports supervised security circuits that monitor the normal state of the door contact. George Risk Industries MS180-12-W-IND combines recessed mounting, steel construction, and Magnasphere technology in a door-position sensing component for physical-security applications. The contact is described as tamper and defeat resistant, making it suited to monitored openings where interference resistance matters alongside ordinary open-and-close detection. Its white configuration can be selected where the installed contact should align with a light-colored door or frame finish. This configuration is differentiated by its 3/4 in. recessed steel-door format and closed-loop circuit arrangement. It fits deployments that need a concealed door contact rather than a surface-mounted device, including protected perimeter doors, secured interior openings, and alarm-monitored access points. Match the recessed opening and required closed-loop circuit arrangement to the door and security panel installation before fitting the contact.