I listened to that, sounds different than the dtmf I am used to, much different. The tones don't even sound like they're the same type of dtmf on a phone.
I hate the red boxy looking alarms they have in most appartment buildings. Actually, it just depends on what alarms the contractor feels like using. We've got really tiny white ones here in my dorm: http://i99.photobucket.com/albums/l286/StonedChipmunk/firealarmupdate1/S5000125.jpg If they were ins...
If I were him, I deffinetly wouldn't be able to handle the alarm system, the white residential alarms are ok, but I hate the red boxy looking alarms they have in most appartment buildings.