| Description | Increases the voice pickup range from 30 up to 70m2 |
| Compatible Products | Konftel 250, Konftel 300, Konftel 300IP, Konftel 300IPX |
| Compatible Products | Konftel 300WX, Konftel 300MX, Konftel 55WX, Konftel 300M |
| Compatible Products | Konftel 55W, Konftel C5055WX, Konftel C50300 Hybrid |