OS Tech Group is the leading provider of the highest quality voice, data, video, access control and surveillance systems in the Metro Detroit Area. We specialize in custom commercial and industrial design and installation of low voltage applications. Our team of highly skilled technical and support staff will design and implement the most cost effective solution for your businesses needs. For a full line of services please visit our website. Surveillance Systems,PBX Phone Systems,Voip Phone Systems,Intercom Systems,Analog Phone Systems,Wired Networks,Wireless Networks