... class:class 1.o, class 2.0Function and features: 1,Two-way power measure and electricity stealing proof,high accuracy, high ... supply, Loss one(any one wire of three wire) or two(any tow wire of four wire)phase, uninfected measurement 4 ... range 5,Assuming output of electric energy test signal 6,Two-line metering displays the active and reactive electric quantity Rated Current ...