The meter measures current from 1 mA up to 32.767 A secondary, which covers the full dynamic range from light-load office floors to near-full-ratio CT saturation. Rated current is 5 A or 1 A, matching the CT secondary you feed it. Sampling at 32 samples per cycle gives decent harmonic content capture up to the 15th or so — enough for general power quality awareness, though not a full PQ analyzer. The LCD display scrolls through active power, reactive power, voltage, current, and accumulated energy, so a field tech can read real-time values without a comms tool. Four tariff inputs let the meter switch between four rate registers via dry-contact or voltage signals, so a single meter handles time-of-use billing without an external controller. The RS485 Modbus port reports all registers to a BMS or energy management system — wiring is via screw terminals, 2.5 mm² for voltage and 6 mm² for current circuits. The digital output is a static pulse output configurable for kWh or kvarh, driving 5…40 V DC at up to 50 mA — enough to feed a remote pulsecounter or PLC input. The digital input accepts 0…5 V or 11…40 V DC for external tariff switching or reset.
Height is 95 mm, depth 69 mm. Operating altitude below 3000 m, relative humidity 5…95% at 50 °C. The green LED shows power on; a yellow flashing LED signals accuracy checking or overload alarm; a yellow steady LED indicates Modbus activity.