1. General The meter is designed for international requirement, with advanced special measuring chip adopted and modern multi-tariff technology combined. It conforms to IEC61036- 2000, IEC62052-11, IEC62053-21, IEC61086 and IEC1107. 2. Main features 2.1 To measure active energy consumption (TOU) 2.2 To program at most 4 tariffs, 8 time segments, 5 day tables in a week, 6 seasons year table and 32 holiday tables in a year; 2.3 Indication of current operating tariff; Maximum demand; 2.4 Meter programming and reading can be achieved via local IR port; 2.5 Automatic scroll display with quick scan function; maximum 12 scroll display items can be set freely; 2.6 Maximum 15 history consumptions record automatically. 2.7 Calendar from 2000 to 2099 with week shown. 2.8 Detection of opening main cover and terminal cover (Optional) 2.9 Detection of LCD display segment, battery consume and memory alarm 3. Specifications and technical indexes 3.1 Specifications: 220V; 5(20)A, 5(30)A, 10(40)A; 5010%Hz; 3.2 Meter accuracy: Class 1, Class 2 3.3 Start current: Conform to IEC 62052-11. 3.5 Tariff parameters Clock accuracy (daily error):≤0.5S (23°C) Battery capacity: ≥600mAh RTC data retention after power break:≥10 years RTC data retention while changing battery:≥1h 3.6 Power consumption Power consumption of voltage circuit: ≤2W and 10VA Power consumption of current circuit: ≤1VA 3.7 Climatic conditionsNormal operation temperature: -25°C +45°CLimit operation temperature: -40°C +70°CStorage and transportation temperature: -40°C +70°CHumidity: ≤95% 3.8 Battery voltage for RTC data backup: 3.0VDC 3.9 Communication: Conform to IEC1107 serial infrared communication provision. 3.10 Weight: 0.8kg 3.11 Profile dimensions: 198mmx130mmx63mm