| | Make / Model | Product Description |
|---|
|  | Siemens SI-BM3 | Siemens SI-BM3 - door entry phone with one button Surface Mount mount, 1 entrances |
|  | Siemens SI-BM31 | Siemens SI-BM31 - Single button door entry phone for PABX Surface Mount mount, 1 call buttons, 1 handsets, Cast metal panel material |
|  | Siemens SI-BT41 | Siemens SI-BT41 - traditional door phone with key Surface Mount mount, 1 entrances, 1 call buttons, 1 handsets, Stainless steel panel material |
|  | Siemens SI-BT44 | Siemens SI-BT44 - traditional four call button door entry phone Surface Mount mount, 1 entrances, 4 call buttons, 4 handsets, Stainless steel panel material |
|  | Siemens TC-20 | Siemens TC-20 - patented BABT approved door entry phone system controller Surface Mount mount, 1 entrances, 20 call buttons, 20 handsets, Glass reinforced polycarbonate panel material |