SMZ 133 - advanced power monitor and datalogger with 512 Mb internal memory, rich selection of programmable inputs and outputs and with advanced communication options. This panel meter is intended for wide area distribution network monitoring as well as for industrial and building energy efficicency applications. It includes precise electric energy meter - active energy class 0.5, reactive in class 1, with load profile memory. It also records all important electric parameters as well as IO and device status changes, alarms etc. Mechanically it follows the previous power monitor SMZ 33 : it adds precise, continuous evaluation and measurement in accordance with IEC 61557, has larger archive and bigger, high resolution and contrast LCD display. To find more information please see the official product pages .