1.The maximum current meter is 4 the rated current, the product is smart , overload capacityUp to 12 the base reference current.2.This product is measured by LCD digital power, no reset button, to avoid human tampering with the data Rated current:5AMaximum current: 100A frequency: 800imp or kwh LED indicates working of meter.output with optical coupling isolation.35mmDIN rail installationtype: AColour:As ShownMaterial:plasticPackage Contents:1 x Energy meter DDS546COnly the above package content, other are not included.Note:Light reflection and different displays may cause the color of the item in the a little different from the real .The measurement allowed is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.