... IEC62053-21.♦Two LED instructions power supply state, signal of energy impulse.♦Single direction measures single phase two wire active power consumption. It is nothing with ... CT or PT & CT.♦Adopts high reliable and long-life electric components, hioverload, do not need to calibrate for long-term ... ,120,220,230,240,etc.Rated current(A)1.5(6), 2.5(10), 5(20), 10(40)A,15(60 ...