DTZY1122 Three Phase Four Wire Multi-function Electronic Smart Meter brings many enhancements that support emerging needs of smart grid initiatives, such as enhanced memory, greater security, and remote upgrade ability. Developed with technology and communications flexibility in mind, DDZY1122 platform is both a smart metering element that supports RS485, PLCor low-power RF modules. The meter's modular design provides a cost effective solution for many metering applications. Functions and Characteristics Three phase active(reactive) power consumption measurement at different time segment Display: Large LCD display Record, display and store the total active/reactive power consumption and multi rate power consumption during latest 3months. Measurement of maximum demand and billing Two time zones, four rates, ten time periods. Event record of voltage/current missing, programming, demand clearance, etc. Real time data: Time, voltage and current Self verifying and monitoring of power supply, power Network, operation situation of meter. The function setting, programming and reading (concentrated reading possible) can be realized via infrared and RS-485 ports.