| OLTC position detector | NWP-EC 03 BCD/RS 485 |
| Switchover counter | Digital with registry to FLASH |
| FLASH memory capacity | 128 kB/5000 occurrence |
| Communication with external device | RS 485 / BCD connection circuit |
| Transmitter output power | 24V DC stabilized |
| Receiver power | 230V AC/DC +20% / - 30% |
| Dimensions | 145x145x115 |