The monthly test of the all-hazard statewide Outdoor Siren Warning System, along with the live audio broadcast segment of the ...

The Dutch government will conduct a nationwide test of its NL-Alert warning system at 12:00 p.m. on Monday, sending a loud, distinctive alert sound to mobile phones across the country. The sound that ...

Changing app alert tones is a great way to help you distinguish between notifications on your iPhone. You'll know if you're receiving a text or an email without taking your iPhone out of your pocket.

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The sirens can be heard from a distance of up to two kilometres and emit two types of sounds – one an alert and the other signalling danger. These systems are also equipped with real-time monitoring ...