This guide has been updated to reflect changes in the automationbridge v2023.09 onwards.
You will find a device called Alarm on the main page of the automationbridge, this will be in a Room called 'System'.
From here you can ARM the Fibaro Alarm with a single click, when you wish to DISARM, you will be prompted for the PIN code you have setup in the Fibaro Controller.
If you enter an incorrect pin, this popup will show that it was invalid, 
When the correct PIN has been entered, you will receive a confirmation,
You can now proceed to enable for your voice platform.
If you have more than 1 Alarm Zone : you will also find additional alarm devices for each alarm zone that you have defined in Fibaro, for example you may have a Night mode that just arm's downstairs, or have multiple zones that you wish to arm individually.
iOS HomeKit
Step 1 - Enable the device from the Home page of the automationbridge, then click the blue button at the top of the page to apply the changes.
This completes the setup process for HomeKit, you will now find the Alarm object in the iOS Home app, and you will be able to set to OFF and AWAY. Please Note : Night & Home have no equivalent in Fibaro.
Note : If you are unable to disarm the HC3 alarm, check the settings page to ensure that you have entered the correct Pin Code under the HC3 settings.
Google Assistant
Step 1 - Enable the device from the Home page of the automationbridge.
This completes the setup process for Google Assistant. You will now be able to arm and disarm the alarm via Google.
Note : If you are unable to disarm the HC3 alarm, check the settings page to ensure that you have entered the correct Pin Code under the HC3 settings.
The voice commands are
Is my security system armed?
Arm the security system.
Enable security system.
Disarm the security system.
Disable security system.
When disarming, Google will prompt for the PIN code, and will verbally confirm if correct or incorrect.