Description:  This din rail LED AC multifunctional digital meter can display voltage,current,active power,reactive power and power factor simultaneously.It is suitable for electric power systems, home, power distribution box, electrical machinery and equipment monitoring the power grid and power parameters.     Specifications:  Measuring Voltage Range: AC 80-300V.  Mearuring Current Resolution Ratio: 0-100.0A: 10A: 0.1A.  Active Power: 0-30000W.  Reacitive Power: 0-30000VA.  Power Factor: COSφ=1.000-0.000.  Measuring Speed: 2 times/second.  Accuracy: 1%,±2 words.  Din Rail Size: 35mm din rail.  Size: 54×80×64 mm.     Features:  1. Din rail Design.  2. Built-in precision micro current transformer.  3. Can display voltage, current, active power, reactive power and power factor simultaneously.  4. Fit for electric power systems, home, power distribution box, electrical machinery and equipment monitoring     the power grid and power parameters.     Installation Steps:  1. Connect the measured voltage to the terminal of 1 and 2.  2. Internal current transformer installation as graph 2:Let the wire across the hole on the current transformer(the     direction do not impact the measure result).  3. The default display power is active power(V),click the switch(SAM CK) can change to the reactive power(VA)     and power factor( COSφ.     Notice:  Displayer: AC voltage and current with 4-digital 0.31" LED;active power,reactive power and power factor with 5-digital 0.31" LED.     Package included:  1 x  Din rail LED AC multifunctional digital meter