LED digital display rail smart meter with real-time voltage, current, power, kWh, and frequency readings for clear electricity consumption monitoring. Compact design with 2P opening and 35mm standard rail mounting for easy installation. Features power failure memory function to retain data during outages, ensuring accurate readings without resetting to zero. Includes power reset function: press and hold the CLR button for 10 seconds, enter the code to reset power value. Two-page interface cycles automatically; displays high power values across two pages when power exceeds 99.99. Suitable for rental housing, office buildings, lodging, household use, and electrical equipment power measurement. Voltage range: AC 70-270V. Current range: 0-100A (start current 0.15A). Power range: 0-25KW (start power 10W). Energy measurement range: 0-9999kWh (accuracy ±1%). Color: White. Material: PC. Package includes: 1 x smart meter. Product dimensions may vary slightly due to manufacturing tolerances. Display color may vary slightly due to lighting and screen settings.