George Risk Industries 184MC-12-W Recessed Steel Door Contact

Provide door-position monitoring without leaving a surface-mounted contact visible on the opening. George Risk Industries 184MC-12-W is a recessed magnetic door contact for steel-door applications, using a closed-loop circuit and an MC-180 door-channel magnet. When the protected door moves away from the magnet, the contact changes state for connection to a compatible security or monitoring circuit. The recessed arrangement suits steel personnel doors, equipment-room doors, utility enclosures, and other openings where the contact body can be installed within the door or frame structure. Its channel-style magnet is intended for the steel-door installation described for this contact, rather than a general-purpose surface magnet. The specified operating gap is up to 3/4 in in steel, giving installers a defined alignment limit when positioning the contact and magnet across the opening. Choose this contact where the installation calls for a closed-loop magnetic circuit, recessed mounting, and a magnet arrangement for steel doors. Correct operation depends on maintaining contact-to-magnet alignment and staying within the stated gap allowance. The recessed format keeps the sensing components less exposed than an externally mounted contact while retaining a direct magnetic indication of door position.