| Country: | Denmark |
| Title: | Sirens and shelters |
| Description: | The siren alerts either a danger or that it is over. Annual test with audio first Wednesday in May |
| Link: | https://www.borger.dk/politi-retsvaesen-forsvar/Forsvar-og-beredskab/Sirener-og-beskyttelsesrum |
| Category: | Public Notifications |