Sorry, but that is not quit correct. I've just re-read the manual which as clear as mud. so I tried it out.
Click Lock on the remote once while inside - wait 30 secs and wave hand in front of Control Panel. Alarm sounds.
Click the Lock function twice. Double clunk from doors. Wait 30 secs until red alarm light starts flashing. No amount of movement inside triggers the alarm.
Not all models/years seem to have this function. Mine does.
I have been out , jumping up and down, and making all sorts of noise.
And you are right Welsh gas.......sort of.
One push on the key, and alarm sounds after 30 mins
Two pushes on mine doesn't always make the doors clunk....perhaps a low battery....but when I get the extra clunk, and the locks rise a little, presumably removing safelock....then no alarm, even with crazy jumping.
The alarm does sound if you open the door
To add to the senarios
If you open front door, take key out, and push the pillar button, which turns yellow
Then you can single lock...so safelock on, ...and no alarm jumping, but alarm if you open a door from the inside
Final senario is to lock using the button on the door
Then no alarm, and you can open from the inside, with no alarm, but not from the outside....
So thanks Welsh Gas, I think I understand it. You need to go and play Old Sid
And I need to change my remote batteries