The S0 interface is a hardware interface for the transmission of measured values via pulses. Main features:

- Single phase energy meter, 230 VAC 50 Hz
- Direct metering to 32 A in both directions of current
- Display of the active power, voltage and current
- S0-pulse-output; independent of the direction of current
- 7-digit LCD display for energy supply and feeding back
- Can be sealed with a sealing cap as an accessory
- Accuracy class B in accordance with EN50470-3,
  Accuracy class 1 in accordance with IEC62053-21