Features 35mm DIN Rail mounting meets the standards of DIN EN50022.Adopt microelectronics and digital processing technology to measure electric energy, accurate and reliable. 17.5mm pole width meets the standards of DIN43880.With the features of good reliability, small size, light weight, beautiful appearance and easy installation. LCD digital display, no reset button, to avoid human manipulation with the data.It displays electricity, voltage, current, frequency and power. Red LED energy pulse signal.Embedded end cover, ensuring power supply safety. Large scale integrated circuits and precision SMT technology, with good electromagnetic interference resistance and stable performance. Specification: Material: Plastic Model: DDM15SC Accuracy: First Grade Reference Voltage: 220V/230V  50/60Hz Reference Current (Max. Current): 5(80)A Insulating Property: 1min 4KV Alternating Voltage, 1.2/50us 6KV Waveform Impulse Voltage Display: LCD Digital Display Installation: 35mm DIN Rail Wiring Method: Up-out and down-in/up-in and down-out Pole Width: 17.5mm/0.7in Functions: Display electricity, voltage, current, frequency, power factors Package Size: Approx. 8.6 * 7.5 * 4.5cm/3.4 * 3 * 1.8in Weight: Approx. 125g Package list: 1 * Energy Meter Package List