1. The maximum current meter is 4 the rated current, the product is smart meters, overload capacity Up 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:5A Maximum current: 100A Pulse frequency: 800imp / kwh Pulse LED indicates working of meter. Pulse output with optical coupling isolation. 35mm DIN rail installation type: A Colour:As Shown Material:plastic Package Contents: 1 x Energy meter DDS546C Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.