If you have multiple Konnected boards or if you buy a relay module, you can easily add other, non security, things. Instead of the siren, you could use the relay to switch on a sprinkler system, garage door opener, pool pump, motorized gate, or anything. Have fun with it and share your projects! If you need help there are a lot of people that can get you in the right direction.
@Mark Olson
I don't think there is device handler that allows for a dual throw switch.
@Dville
You can use one of the zones to achieve this as well.
I would use the alarm output for something that requires 12v of power like a siren or strobe.