The G4S ZeroWire gives you the same features that are available when accessing your security system locally. These include (depending on your authorisation level): Arming and disarming the system. Checking the arm status. Checking the history of events. Configuring the system. In addition the app allows remote access to any configured cameras.
It's free to download the installer of G4S ZeroWire, also, you can have a look at users' reviews on Droid Informer. The app runs on Android 4.0 and higher. It's safe to download this application. UHS Pty Ltd is the developer of G4S ZeroWire that can be found in the Tools category.