Single Phase DIN-Rail Energy Meter (DDS-1Y-L) Executive Standard: IEC62052-11 2003; IEC62053-21 2003 and IEC62056-21(IEC1107) DIN-rail standard: "SO"43864. Function and characteristic: Single measurement(optional RS485 or RS485 Modbus) High accuracy of measure, convenient installation; Logical design of Anti-creep. Technical data: Rated voltage: 110V, 120V, 220V, 230V Rated Current: 1.5(6)A, 5(60)A, 10(100)A Frequency: 50-60Hz Connection mode: CT type; Direct type Display mode: LCD 5+2 = 99999.99kWh Accuracy Class: 1.0 Power consumption: 1W (when 220V 20A) Start current: 0.004Ib Constant: 12800 imp/kWh; 800/1600/3200/6400 imp/kWh Standard work temperature: -20-45 degree Climate work temperature: -30-55 degree Relative humidity: 85%. Size: 100*76*65 mm.