The Janitza UMG507 L is a versatile and powerful Power Quality Analyser designed for front panel mounting. It is engineered for continuous monitoring of power quality parameters such as harmonics, flicker, and short-term interruptions according to standards like EN 50160. This device serves as a central measurement tool for energy management systems (e.g., ISO 50001), providing comprehensive data for fault analysis and preventative maintenance in low and medium-voltage networks. With its integrated web server, LCD display, and multiple communication interfaces including Ethernet and RS485, the UMG507 L offers extensive capabilities for data logging, visualization, and integration into existing building management or SCADA systems.