DTZY566 three phase prepayment meter, adopting LSI and digital sampling technology, fully comply with DLMS/COSEM standards, with features of active energy metering, demand metering, power consumption metering; support single tariff, TOU billing, step tariff billing mode; monthly frozen, load profile storage; fraud and tampering event record; disconnect on debt, tamper event triggering disconnection; non- disconnection for friendly time section, weekend day and public holiday; Friendly credit recharge mode against credit hoard, emergency energy function, good energy consumption tips, and test mode; RS 485 and optical communication interface, etc. It passes DLMS certification test, which make it an ideal metering device for utilities.