... meter shell, parts between the iron core of the clamp-current transformer and secondary windings can stand 1000V/50Hz. Parts between the ... range of measured signal when measuring phase, Phase U1-U2, 30V~500V Phase I1-I2, 10mA~10.00A Phase U1-I2 or I1-U2 ... Features:I.Display, three and halfII. Sampling Rate, 3 times per secondIII. Power Supply, Single 9V laminated cell,current of power is ...