The DMTME series devices are digital multimeters designed to measure the most important electrical parameters in single-phase and three-phase networks at 230/400 V AC as effective values (TRMS), including maximum, minimum, and average values, as well as active and reactive power. The measurement values are displayed on four red 7-segment LED displays. This allows for easy and clear capture of various measurement values for individual phases and the entire network at a glance. The DMTME multimeter combines the functions of a voltmeter, ammeter, power factor meter, wattmeter, varmeter, frequency meter, and active and reactive energy meter into a single device. This results in significant financial savings due to better space utilization and time savings in wiring, as well as the advantage of clear measurement displays on a single device.