Yale Smart Lock and automated disarming of security (Australia)

Are you looking at using STHM or just an alarm?

You can check out this app which allows you to manage your lock and create custom actions for each user code which can control devices including arming/disarming alarms. For STHM there is a way to handle that too, see this link:

Both ZigBee and ZWave work well. There are differences between how ZigBee and Z-Wave works as a technology. You’re good with either one in general. If you’re looking to use some of the advanced features of your Yale lock like auto relock, wrong codes, audio, privacy etc you may want to consider using the Z-Wave module with this Enhanced Z-Wave Lock DTH.
Either way make sure you add a repeater between your lock and your hub for a better experience.