The true rms measuring method and the highest measuring categorycat iv 600 v allow the device to be used in industrial environments andensure reproducible measuring results the measuring functions meet the manifold requirements of qualified electricians in industry trade and service for hvac technicians the benning mm 6 1 offers a temperature range anda microampere current rangetrue rms ac dc voltage measurement up to 1000 vresistance 40 m frequency 100 khz and capacity measurement