1- I think 'taking' is OK, you could use 'dealing with'
2- It's 'out of the blue'. How about 'all of a sudden'?
3- Couldn't you just say the 'alarm os only meant to ring in the event of a break-in'?. I think the rest is understood.
4- I think it's OK. You could use an ampersand (&)
5- If the alarm rings in suite 2 or 3, it triggers the alarm in our suite/suite 1.???
6- From is fine
7- Security code??
8- Reverse the order- Gnus, who balh blah, and Semaj...
