... Amp clamp meter Anti high voltage circuit design Auto power off, data hold Unit symbol ... mm;2 Amp clamp meter with portable design, easy to operate.3,Full function protection ... anti high voltage circuit design4,CE stander design,improve the safety of the test.5, ... frequency responseAmperemter50Hz/Voltage(50-400)HzOperation wayManual or auto rangeMax. display1999Clamp open35mmBattery3V (2*1.5v) General ...