Yes indeed the VerticalMan’s wi-fi version does a classical web call http to a web server that must accept one of the two supported transmission protocols.

It is suggested this kind of notification on wi-fi net because on this connectivity the customer could do some internal tests on the correct operation with some System Management, making the system extremely safe, so available during the necessary moment of alarm notification.

Differently, on a connectivity offered by a GSM operator, these tests could not be done and the unavailability of the data line could make the system unsafe in necessity moments.

However, the customer has the possibility to choose if his centralized alarm server is published on the internet or on a VPN and use VerticalMan on a mobile network.