Product Name: Ddsf5558 Single Phase Multi Tariff Kwh Meter Model NO.: DDSF5558 Usage: Multi-Functional Energy Meter, Watt-Hour Meter, Meter for Industry and Home Use, Standard Electric Energy Meter, Prepayment Meter, Reactive Energy Meter, Multi-rate Watt-hour Meters, Maximum Demand Meter Display Type: Digital only Phase: Single Phase Accuracy Class: 1.0 or 2.0 Max Record Time: 9999 Hours . Trademark: KASAN. OEM Transport Package: Standard Export Package Specification: ce Origin: Zhejiang China Product Description DDSF Single phase multi-tariff active energy meter with RS485 communication, LCD display.The meter is used to measure 50Hz or 60Hz active energy consumption from single phase two wire AC electricity net.The meter adopts LSI (Large-scale Integration) and SMTmanufacturing technique, the key components and part all adopt long life type.The meter has the features of good reliability, small volume, light weight, specious appearance, etc...The meter is widely used in office buildings, shopping malls, residences, airports and metro, etc.The meter has function of different tariff measure for different time period.The meter has RS485 communication module, which is convenient to meter-reading.MAIN FUNCTIONS:1. Active energy measuring: It can measure total active energy consumption. The reverse energy is measured as forward active energy.2.4 tariffs, 8 time intervals; LCD cycle display total, peak, level, valley, time, date, etc.3. RTC(Real time clock), leap year adjusting & calibration automatically.4. Consumption cecord: It can store consumption in billing day of each month. The billing day can be set within 1 to 28 of one month. The comsumption data can be reserved for 12 months. All data may be accessed via personal computer(PC) or hand hold unit(HHU).5. Battery: It is equipped with build-in lithium battery, which could be used for a long time and is environmental-friendly.6. Event Log: It can measure MID, record the happening time of programme and power down and their times. Record meter reseting, time interval setting, and clock setting etc.7. Communication: It adopts RS485 communication, which is designed for preventing from the lighting strike. It can also communicate via infrared interface, which realizes the meter reading and programming.8. Meter reading function when power off.9. May setup the meter number, bureau number, time period, rate, date, password and initial electric power.10. Password and program switch protection is also available to be applied to the date copying components.TECHNICAL PARAMETERSAccuracy classClass 1.0,Rated voltage(V)110, 120, 220, 230, 240, etc.Rated vurrent(A)1.5(6), 2.5(10), 5(20), 10(40)A, 15(60), 20(80), 30(100), etc.Rated frequency50Hz or 60HzStarting current0.4%IbRTC accuracy≤ 0.5s/d(25º C± 2º C)≤ 1.0s/d (when the backup lithium battery working)Battery capacity≥ 1000mAhBackup battery voltage3.0 or 3.6VDCData preservation time≥ 10yearsRS485 communicationBaud rate: 1200bps~2400bpsInfrared communicationCommunication distance: ≥ 4m; Communication angle: ≥ ± 15oMax. operation temperature-40° C ~ +80° CMax. storage temperature-45° C ~ +85° CRelative humidity≤ 85%Service lifeMore than 10 yearsDimension157mm x 130.5mm x 62mmWeightApprox 650g