Single-phase Digital Multi-tariff Kwh Meter

Single-phase Digital Multi-tariff KWH Meter produced by Longer, an electricity meter supplier, is composed of the electronic single-phase kWh meter part and multi-rate part, LCD display, infrared or RS485 communication.
Functions and features:
1. DDSF298 single phase multi-rate kWh meter is able to measure the power consumption in different time periods (peak period, trough period, pointed period and smooth period) with a minimum interval of 5 minutes.
2. The consumption data can be reserved for 12 months.
3. It can automatically save the reverse direction power, starting time and the lasting time.
4. It has the function of reverse directional pulse test and indication.
5. It adopts isolated RS485 communication, which is designed for preventing the lighting strike.
6. Password and program switch protection is also applied to the date copying components.
7. It is equipped with build-in lithium batter, which could be used for a long time and is environmental-friendly.
8. It can setup the meter number, bureau number, time period, rate, date, password and initial electric power.