... Single phase power multi-tariff meter 2.Active energy measuring 3.Energy Record,TOU control 4.LCD display 5.RS485,Infrare ApplicationDDSF5168 ... two wire active electronic multi-tariff watt-hour meter, LCD display. The meter is used to measure 50Hz or 60Hz active ... buildings, shopping malls, residences, airports and metro, etc.The meter has function of different tariff measure for different time period ...