... features of good reliability, light weight, specious appearance, etc.The meter is widely used in office buildings, shopping malls, residences, airports ... passive(nonpolarity),complying with standard IEC62053-21.♦Two LED instructions power supply state, signal of energy impulse.♦Single direction measures single ... classClass 1.0,Rated voltage(V)110,120,220,230,240,etc.Rated current(A)1.5(6), 2.5(10 ...