UPM307 is a digital meter able to measure the electrical parameters on three-phase systems. It provides accurate measurements even by distorted waveform. The backlighted LCD display is very large and highly efficient, therefore it guarantees perfect visibility in all light conditions. A simple menu structure makes the instrument easy to use and allows a quick check of the measured parameters. The working parameters can be easily set up by instrument keypad. The RS232 or RS485 serial communication port allows to transfer the three-phase electrical parameters from the instrument. WINTOOL, free of charge software, allows to show on a PC all the measured values and to program the instrument in a fast way. The EVU model is a version dedicated for 3 phases-2 wires-1CT wiring diagram. It allows to select the line voltage and the phase current to be connected to the instrument. UPM307 replaces multiple analog meters as well as single function meters such as voltmeters, ammeters, wattmeters, varmeters, frequency-meters, powerfactor-meters, energy-meters, etc. UPM307 is a compact, cost effective meter operating both as a stand-alone device or as an integral part of a more extensive energy monitoring and management network.