Features: 1. 35mm DIN Rail mounting meets the standards of DIN EN50022. 2. 17.5mm pole width meets the standards of DIN43880. 3. LCD backlight digital display, no reset button, to avoid unauthorized data manipulation. 4. Displays electricity, voltage, current, frequency, and power. 5. Red LED energy pulse signal. 6. Embedded end cover for power supply safety. 7. Features reliable performance, compact size, lightweight design, sleek appearance, and easy installation. 8. Utilizes microelectronics and digital processing technology for accurate and reliable electric energy measurement. 9. Built with large-scale integrated circuits and precision SMT technology, offering strong electromagnetic interference resistance and stable performance. Specification: Material: Plastic Model: DDM15SD 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 Backlight Digital Display Installation: 35mm DIN Rail Wiring Method: Up-out and down-in / up-in and down-out Power: 17000W Environment Temperature: -20~+50°C Pole Width: 17.5mm / 0.7in Functions: Display electricity, voltage, current, frequency, power factors Product Size: Approx. 8 x 3.7 x 6.7cm / 3.1 x 1.5 x 2.6in Weight: Approx. 127.8g Package List: 1 x Energy Meter Note: Does NOT include reset function. Please note that the new or old version of this product may be shipped randomly. Confirm acceptance before ordering.