Allegion is a manufacturer of security products such as steel doors and key systems. The products include door closers and controls, doors and door frames made of steel, electronic security products, electronic and biometric access control systems, exit devices, locks, locksets and key systems, and attendance and workforce productivity systems. The products are sold and promoted around the world under various brands, including CISA, AXA, Briton, Falcon, Bricard, and Aptiq. The largest product category by revenue is locks, locksets, and key systems. Allegion generates most of its revenue in the United States of America.