UPM309 is an innovative network analyzer for measurement and recording of the electrical parameters. It is particularly suitable for consumption analysis and control, with an excellent quality/price ratio. UPM309 power meter is the ideal instrument to establish the measurement points on the plant. The instrument can communicate through the RS485 serial port by MODBUS RTU/ASCII protocol or through Ethernet port by MODBUS TCP protocol. The measured values are bidirectional on four quadrants for all energies and powers. In addition, the three-phase power meter offers the possibility of recording all energy meters: active, reactive and apparent (ENH version) for optimal energy monitoring. UPM309 provides fully and accurate information on the load in the measurement point and it allows to calculate the costs of the energy consumption.