No, the device itself does not emit sound. It’s designed as a silent alarm to help you call for assistance before a situation escalates. However, you will receive haptic feedback through a vibration when the alarm is triggered.
To receive a sound notification on your phone, you can enable it in the app. Simply go to the home screen, select "My Sirène", tap the three dots, and activate the sound on your phone. You can also test the sound there. The alarm sound will continue until you deactivate it in the app.