Box box in galvanized sheet then painted with very high resistance epoxy powders, 16 + 4XLR, 50mt. Box box in galvanized sheet then painted with very high resistance epoxy powders. Built with parameters referring to the safety standards currently in force, and worked with the most sophisticated equipment. XLR metal connections, CMN series multipolar cable with separate masses and high quality assembly. 80/20 tin solders. Covering of the flying terminations with high resistance sheaths for temperatures up to 150c °. Configurations up to 40 channels.