... the nipper jaw,Optional positionvi. Amplitude range of measured signal when measuring phase100~220V,0.5A~1.5AviiExternal reference ... in high accuracy, low price, portable hand-held, and dual-channel input measurement. Product features:I. Ingenious structure, easy operationi. ... nipper jaw,Optional positionvi. Amplitude range of measured signal when measuring phase100~220V,0.5A~1.5AviiExternal reference ...