| Input | Pulse |
| Memory size | 128 kB (256 kB for ERi 256k version) |
| Memory capacity | 18 000 records (36 000 for ERi 256k version) |
| Battery lifetime | more than 5 years |
| Protection rating | IP68 |
| Operating environment temperature | –40 to 60 °C |
| Operating environment humidity | 0 to 100% |