Working voltage：220V±30％，Frequency range：50Hz±5％
Working environment：Temptature-45℃～+75℃，Relative humidity≤95％
Support DL/T645-1997、DL/T645-2007communication protocol
Service life≥10 years
Able to forward orders sent to concentrator, and return meter’s data
With infrared maintenance interface, can query parameters and power data
Technical Parameters
Data transmission interface：meter reading RS-485 port、carrier communication port、Upstream  RS-485 port、infrared maintenance port
Storage capacity：8KBEEPROM