UT15 Series test pen has the functions: AC/DC voltage measurement (including
three-phase AC), phase position indication of three-phase AC, continuity test and
single probe measurement (judge null wire or live wire). It is applicable to smelting, electron, manufacture, fossil oil, national defense, electricity and chemical engineering
and so on. It can also solve the complex problems of electron, factory automation,
electric power distribution and electromechanical device.