Participants and guests at this year?s TEC 2018, presented by PSA will have the opportunity to explore and compare the various types of door interlocking systems at an informative session presented by Skip Burnham, A/E Sales Manager for Dortronics Systems Inc. The course, titled Door Interlocks: Applications and System Design, will review the various types of door interlocks, mantraps, sally ports and their applications as well as discuss the different types of interlock controls and the accessories required for a fully functional system.