1. Three phase power watt-hour meter 2.8 digit LCD display 3.Measure bidirectional energy 4.Infrared/RS485 5 ... not more than 5s3. Adopting inset crystal hardware clock circuit, with temperature compensation circuit to ensure under the normal working conditions ... peak load, day hour, low load energy, etc. LCD display recycled. After energy meter connect electricity, date, time, current total, sharp, ...