American-Made Electronic Locking Solutions Since 1972

Founded in 1972, Security Door Controls (SDC) develops, manufactures, and markets mechanical door locks, exit devices, access controls, electronic locking devices, and security systems worldwide from their American facilities. A respected force in electronic security and architectural openings, SDC holds scores of patents and trademarks for premium, code-compliant products including magnetic locks, electric strikes, delayed egress systems, and electrified mortise locks. SDC locking systems are found in industrial, commercial, and retail facilities, technology centers, nuclear power plants, laboratories, museums, schools, airports, government centers, and military bases worldwide.