For over 30 years, IEI has built its reputation with reliable products and excellent customer service. With a range of access control solutions, including the market leading line Door-Gard stand alone keypads, Secured Series Access Systems and now with the eMerge Browser Managed Security Platform, Linear’s IEI brand offers customers the right solution for their application and combines that solution with a commitment to excellence in service and support. The entire framework of operations is very tightly integrated; therefore, IEI offers a unique experience for every customer based in Eastern, Central, or Western region of the United States. IEI works seamlessly for you. IEI products are available in the segments like surveillance, access control, door operators, radio controlled applications, personal emergency, security systems, and many OEM products made to order for large clientele. In Fact, IEI is a pioneer for the use of radio frequency in security solutions and their invention has brought a new paradigm shift in the industry. Strategically, IEI has divided its functioning in two zones; they manufacture in China and manage from America. Expert staff at California carries out designing, research and development, and all the allied engineering processes. IEI has the vast experience and are able to deliver top-notch solutions when you need them the most.