Auto Store & Memory Function: when power off, the electric energy data will be stored and memorized, can be reset.Safe & High Precision: This single phase power consumption meter features high quality ABS flame resistant material, making it safe to use.DIN Rail MountingThe energy monitor is small size, light weight, with good reliability and easy installation. 35mm standard DIN-rail mounting in accordance with standard DIN EN50022.Electricity usage monitor: Monitor is the killer of the high-cost energy appliance, helping you lower power consumption and save money.Rate Voltage:230V; Rate Current:30(100A)