Emergency whistle
Shouting tires you quickly when you need to be heard. This tool plays a loud, pulsed whistle at 3–4 kHz from your phone. A real whistle needs no battery, so keep one in your kit too.
Works offline
- Turn your phone’s volume all the way up. On iPhone the silent switch can mute it.
- Do not hold the phone close to your ear; the sound can damage hearing.
- The screen stays on while it plays.
Other tools
Sources
- EarthquakesReady.gov (FEMA) · ready.gov
- Deprem Öncesi, Anı ve Sonrası Alabileceğiniz Önlemleri Biliyor Musunuz?AFAD · afad.gov.tr
- Afet ve Acil Durum Çantası Nasıl Hazırlanmalı?AFAD · afad.gov.tr