| Answer | Crossword Clue |
|---|---|
| RADAR | Modern warning device. |
| RADAR | Modern warning system. |
| RADAR | Warning device |
| ALARMBELL | Warning device. |
| FLARE | Warning device. |
| HORN | Warning device. |
| FLARE | Warning device |
| FIREALARM | Warning device |
| SIREN | Warning device |
| HORN | Warning device |
| TELLTALE | Warning device |
| SMOKEALARM | Warning device |
| SIREN | Warning device. |
| RADAR | Defense warning device. |
| SMOKEALARM | Early warning device |
| LIGHTSHIP | Pilot's warning device. |
| RADAR | Early-warning device |
| SIREN | Tornado warning device |
| SMOKEALARM | Noisy warning device in the home |
| FIREALARM | For a warning device, company must acquire genuine article (4,5) |
