| Features | ELH 2 | DC Loop Holder | Adapter | Loop holding or terminating |
| Features | ESC 10 | Signal Converter (V.24-V.11) | Handy | PC control through long wire (max.500 m) |
| Features | ECB-A | Carry bag for one handy instrument with accessories ( e.g. ETT 10 & handset ) | ||
| Features | ECB-B | Carry bag for three handy instruments (e.g. EFL 10, ETDR 10) | ||
| Features | ECB-C | Carry bag for a PC controlled instrument (e.g. EP 2A, EC 2A, EQS 133A) | ||
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