R 35mm DIN standard rail installation, in compliance with DIN EN 50022 standard, or front panel installation (installation hole center distance of 63mm), two installation methods can be chosen by the user at will.

R 10 pole width (module 12.5mm), in accordance with JB/T7121-1993 standard.

R can be displayed on a 6-digit (9999999kWh) stepper motor pulse counter, or on a 6+1-bit (999999.1kWh) LCD display.

R can choose between built-in far-infrared data communication port and RS485 data communication port, with communication protocol compliant with DL/T645-1997 standard, or other communication protocols can be selected.

R optional built-in maintenance free lithium battery, used for power outage LCD display reading.

R-S type wiring (bottom inlet, top outlet), can be used directly or CT inlet. CT inlet instruments can be set with 27 CT ratios, and the instrument will read directly when set, without the need to multiply by CT magnification.

The R CT connected instrument is displayed on a 7-digit LCD, with 5+2 digits (only when the CT ratio is 5:5A) or a 7-digit integer display, selected by the set CT ratio.

The R configuration has a polarized passive power pulse output port that complies with IEC 62053-31 and DIN 43864 standards.

The R LED indicates the power status and power pulse signal of each phase, as well as the data communication status.

R automatically detects the direction of load current flow and is indicated by LED.

Single directional measurement of three-phase active energy consumption, independent of the direction of load current flow, in accordance with IEC 62053-21 standard.

The R transparent PC material molded short terminal cover is beneficial for reducing installation space and facilitating centralized installation.