The Gossen Metrawatt U2389-V026 is an electric energy meter with digital display and mounting for DIN rail. It can measure values like voltage, current, energy, power and frequency in AC/DC systems up to 1,000 V. The voltage and current inputs have a 10 A range and can measure up to 3,600 A, if the proper current transformers are used. The meter also has several other features that make it an ideal choice, such as temperature compensation, pulse output, and a communication port for communicating with a PC. The meter can display readings in multiple units like kWh, kVARh, Hz, W, VA or VAR and can store up to 2,500 measured values.