when more than 3 handsets used from one button. Up to 7 handsets from one button. Requires an AS/200
| Make | BPT |
|---|---|
| Manufacturer | BPT Security Systems (UK) Limited |
| Model code | BC/200 |
| Series | Audio Systems 200 Series |
| Additional info | when more than 3 handsets used from one button. Up to 7 handsets from one button. Requires an AS/200 |