UT804 is a 40000-count auto range, true RMS, benchtop digital multi-meter, equipped with full-function and analogue bar
graph display, full-range overload protection, battery and electricity power supply, RS-232 and USB interfaces, 9999 data
storage and recall. It is used for measurements from smelting, electronics, telecommunications, manufacturing, petroleum,
national defense, electric power, chemical industries and it is a necessary experimental tool for laboratories in colleges
and universities.