SDC is serious about its vision. We want to be recognized for providing the highest quality products and best service to our loyal customers. 




Our employees are committed to providing innovative, high-quality security products and services that meet our customer needs.  



Through training and continuous process improvement, our company endeavors to deliver the highest quality products to our customers on time, every time. 



Commercial, industrial, institutional, government, utilities, airports, financial, education, universities, health care, transportation, nuclear facilities, and more. 

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SDC has been in business for over 40 years, providing the Access Control Industry with quality door hardware. 

Company Profile  

Our company develops, manufactures, and markets, mechanical door locks, and exit devices, access controls, electronic locking devices, and security systems worldwide. Our founder Arthur V. Geringer, D.A.H.C., with the commitment of his funds, founded the company in 1972. Assembly of S.D.C products takes place in the United States and is available worldwide. 

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