... or 60Hz active energy consumption from three phase four wire AC electricity net. The meter adopts LSI (Large-scale Integration) and ... years, the battery can continuously work more than 3 years. ♦ Display and surveillance 1. Large wide temperature (-30ºC--80ºC ... , sharp, peak load, day hour, low load energy, etc. LCD display recycled. After energy meter connect electricity, date, time, current total ...