 |
| central alarm station: 7 phrases in 5 subjects |
| Firefighting and fire-control systems | 1 |
| Military | 1 |
| Security systems | 3 |
| Technology | 1 |
| Telecommunications | 1 |
|
| central alarm station: 7 phrases in 5 subjects |
| Firefighting and fire-control systems | 1 |
| Military | 1 |
| Security systems | 3 |
| Technology | 1 |
| Telecommunications | 1 |