Btw if you plan on getting an alarm system like this. I would def. suggest you ask for a 'test' in the shop. You know, that they show you how bright the light can go, and how loud the sound can go (which starts if you do not wake up from the light). To make sure that it is something you can wake up from (if you sleep through that many alarms I think it is def. worth seeing for yourself first. I figure there will be a difference in there between different ones. )