Main Features: 1. Able to display all measured data; such as current, voltage, real time power (the average active power in one minute), maximum demand etc.; 2. Measuring active energy against each time segment(time of use); provided with 2 seasons, 4 tariffs, 8 time segments, 5 day tables, 1year table with 6 lines (at most 6 time zones in a year and different day table can be set in different time zone), 32 public holiday day tables with option set, indicator for tariff; 3. Storing last fifteen months (billing period) consumption and related stored time and date automatically or manually, twelve automatic billing data can be set as required; 4. LCD display, decimal digits of display data can be set; 5. Scroll-display parameters (not more than 12 items) and scroll-display interval can be preset, displaying order of the parameters can be set as required; 6. Built-in RTC clock, broadcast time synchronization via RS485 communication interface; 7. The permission of meter parameterization or data clearing is controlled by authorized person with authorized password as well as the status of sealed switch on the meter; 8. Manual and automatic maximum demand reset; 9. Provided with key-scroll and quick scan; 10. Store the data when time zone's switching, write the current energy value into stored data area at zero o'clock in the time zone's switching day; 11. Provided both photo-electric insulated impulse test output and LED test output; synchronous output second signal (optional) for detect the accuracy of the built-in clock; adopting photo-electric insulated output method; 12. Self-detecting, warning alarm provided, online detecting important components and the meter's running status; 13. Programming (parameterization) and meter reading can be achieved via infrared port or RS485 communication port by using HHU or PC; which also can be manually done by using infrared controller; 14. Recording extraordinary/important events: able to record the occurred date, time and No.s of all extraordinary/important events, such as programming (parameterization), billing reset, removing upper cover/terminal cover (optional) etc.