security alarm??

[cllecr]

We are new owners of a 2011 Sunseeker 2300, have been on the road for two weeks since the day we picked it up... thoroughly enjoying! We continue to discover new things and have found this forum to be one of the best sources of information on topics we are puzzled about, so we come to you again with yet another mystery.
Quite by accident, we discovered that our vehicle is equipped with some sort of security alarm, but we are unable to find anything in the manuals telling how to activate or deactivate it intentionally. The coach door handle has two toggle locks...with two separate keys... One round and one square headed. The first time we discovered that the square key fits the upper keyhole was when we accidently set off an alarm. Some combination of locking/unlocking coach and/or cab caused a blaring, repeating alarm to go off which we finally stopped by getting in the cab and starting the engine.
The square key seems to be a sort of deadbolt... does this also set an alarm, or are we way off? We are currently "residing" in a university parking lot... A security alarm would be handy, but could also be a perplexing annoyance if we continue to set it off ourselves! Can anyone explain this feature to us?

[bclemens]

I can tell you there is no factory security alarm and it sounds like your door lock is just like any other. I'm guessing that is some other sort of signal...or an aftermarket device.

[cllecr]

It could have been a security alarm from the cab area... It sounded like a "panic" alarm although we do not have electronic key fobs... not how to check that.

[Tbeasley77]

I'm not aware of security alarm option on a sunseeker. My initial guess was the propane leak detector went off maybe due to low power which explains it shutting off after starting the vehicle. Was the alarm coming by the propane leak sensor at the door or somewhere else?