The SOS call is available via a GSM connection only when the optional SOS button and a SIM card are installed in the DEVA.
When a person pushes on the SOS button, DEVA calls the first available contact in the Contact list.
In order to activate this functionality,
- Set a contact as available to receive Voice call in System Admin/Contacts
- Create and activate an event where the condition is the External trigger = active and the action is SOS Call