e.t.e.m.â®, founded in 1980, works exclusively in the security industry and is a market leader in perimeter and access control systems. the use of advanced technologies and high-quality certified materials have placed e.t.e.m.â® among the world's leading players in its industry. Each security system produced by e.t.e.m.â is the final result of a technical process that begins with the study of the specific demand of the customer and culminates