The Janitza UMG 604-E is a compact and powerful Power Quality Analyser designed for mounting on DIN rails. It is engineered for continuous monitoring of power quality parameters, energy consumption analysis, and fault detection in low-voltage distribution systems. Featuring a fast 20 kHz sampling rate per channel, it accurately measures and records parameters such as voltage, current, harmonics up to the 40th order, and transients. With its integrated Ethernet interface and support for multiple protocols like Modbus TCP and BACnet/IP, the UMG 604-E seamlessly integrates into modern energy management systems, SCADA, and building automation environments, making it an essential tool for ensuring network stability and optimizing energy efficiency.