| Telephone Balance Units - Analogue HY-03 |
| HY-03 |
Automatic Analogue TBU, Free Standing |
| HY-03S |
Automatic Analogue TBU, Rack Mounted |
| HY-03T |
Twin Automatic Analogue TBU, Rack Mounted |
| HY-03DTD |
Dial Tone Detect Add-on Board |
| HY-03CON |
Front Panel Conversion Kit, HY-03S to HY-03 |
| HY-03SCON |
Front Panel Conversion Kit, HY-03 to HY-03S |
| HY-03TCON |
Front Panel Conversion Kit, HY-03 or HY-03S to HY-03T |
| HY-02EC |
Eurocard Version of HY-02 (non RoHS) |
| RD-02EC |
Eurocard Version of RD-02 (non RoHS) |
| Telephone Balance Units - Digital DHY-03 |
| DHY-03 |
Automatic Digital TBU, Free Standing |
| DHY-03S |
Automatic Digital TBU, Rack Mounted |
| DHY-03T |
Twin Automatic Digital TBU, Rack Mounted |
| DHY-03EC |
Automatic Digital TBU, Eurocard |
| DHY-03CON |
Front Panel Conversion Kit, DHY-03S to DHY-03 |
| DHY-03SCON |
Front Panel Conversion Kit, DHY-03 to DHY-03S |
| DHY-03TCON |
Front Panel Conversion Kit, DHY-03 or DHY-03S to DHY-03T |
| DHY-03CONF |
Conference Cable to Connect 2 x DHY-03 Units |
| DHY-03RLY |
Latching Handset Relay Option for DHY-03, S and T |