Range of TRMS Digital Multimeters for Specific Tasks in – Telecommunications, Avionics, Medical and Extreme SurroundingsMETRAHIT S series special digital multimeters offer all of the performance features of a highly advanced measuring instrument – and they’re ideally equipped for specialized­ tasks.Whether for industrial use or in communications technology, in the lab or out of doors: with ultramodern technology and rugged quality, these instruments guarantee reliable measurement results anywhere.