Industrial machines employed in the packaging sector find an extensive application and present different requirements depending on the type of content and of the packing material. From food industry to beverages bottling, from labeling to wrapping machines, the production and hygienic-sanitary requirements vary enormously and, therefore, also the electro-mechanical components have to meet different standards. Eltra provides several solutions in terms of position control sensors according to the type of machinery and materials employed for the packaging, with common features of speed, precision and easy mounting. Moreover, to ensure an optimal protection and durability of the encoder in those plants where corrosive and chemical products are used in the cleaning or in the handling of food, Eltra has designed stainless steel models that guarantee a long-life with low maintenance of the device.