Isotec Security is the only company in the U.S. solely dedicated to manufacturing interlocking door Safety Entrances®. Our UL® Ballistic rated Safety Entrances® have the Certificate of Designation by the Department of Homeland Security as Qualified Anti-terrorism Technologies. Our process is simple yet essential to your protection. We listen first, and ask a lot of questions to insure that we understand your objectives. We then research, design and engineer to your specifications to protect you against threats; keeping safe your personnel and those they serve. Isotec is the number one choice of private security integrators and federal agencies for automated interlocking door Safety Entrances®. We specialize in designs and technologies that enable our Safety Entrances® to detect, isolate and prevent identifiable threats from entering your facility