The type ST12F01 meter is a new generation electronic watt-hour meter designed for measuring energy consumption in single phase services, time-of-use metering with up to four tariffs and custom billing cycles allowing billing and management applications in IEC compliant countries. It is a cost-effective choice for residential and light commercial application.

Key features：

1-phase 2-wire network 

220-240V 50 Hz reference voltage/frequency

Class 1 or 2 (IEC), Class A or B (MID) 

5A, 10A, 15A basic current, 40A, 60A, 100A maximum current 

Back light display, with 7 digits LCD

Low self-consumption and long life operation

Polycarbonate case and IP52 protection

High accuracy of IEC standards, class 1.0

Class B certified to EN 50470-3 (MID)

Measurement of active (kWh), separated energy registers for import and export

Up to 4 tariffs per day and custom billing cycles

Precision internal real time clock (RTC) with backup long-life Li-battery Instantaneous per phase values of voltage, current and power factor (option)

Interface and Communication：

DIN-S0 Pulse output for kWh, high-light LED indicated for accuracy test

Data readout by optical port according to IEC 62056-21

(IEC61107 protocol support) data with OBIS identifiers (IEC 62056-61)

RS-485 communication ability (optional)