With the Somfy Protexiom Start, you'll have everything you need for basic security. The set consists of a 3-in-1 hub (base station, GSM transmitter, and siren), a motion detector, a magnetic contact, and a remote control. Since all elements are pre-programmed, it is only a matter of plug and play. Install the app on your smartphone, tablet, and PC and operate the alarm system remotely. The system will send a notification to up to 4 connected persons in the event it detects something. If you slot a SIM card into the hub, you'll also receive notifications on your phone in the event of a power failure (causing your internet connection to drop). That way, you'll be sure that you'll always be up to date with what's happening in your home.