 |
| acoustic alarm: 11 phrases in 6 subjects |
| Firefighting and fire-control systems | 1 |
| Medical appliances | 1 |
| Security systems | 1 |
| Technology | 2 |
| Telecommunications | 5 |
| Transport | 1 |
|
| acoustic alarm: 11 phrases in 6 subjects |
| Firefighting and fire-control systems | 1 |
| Medical appliances | 1 |
| Security systems | 1 |
| Technology | 2 |
| Telecommunications | 5 |
| Transport | 1 |