To combine with 901N audio entry system etc
| Make | Bell Systems |
|---|---|
| Manufacturer | Bell System (Telephones) Limited |
| Model code | SPA1 |
| Panel Type (separate) | Audio Panels |
| Mount Type | Flush Mount |
| No of Call Buttons on Panel | 1 call buttons |
| Panel Material | Aluminium |
| Additional info | To combine with 901N audio entry system etc |