house intercom/alarm

[samzyr]

looking for info on a wireless intercom system. if anybody has ever put one in?
also is there any type of alarm system thats not build into the house thats works?

[Yeki89]

You have 3 options.
1) small cheap gadgets that you stick a contact on the wall, and corespoding door/window. - Very cheap yet totally not practical. (everytime u need tooo turn all on... all off)
2) Wireless systems that are so-so. as most of wireless technolegy get interrferance, has a limited range, and requires maintance (battery changes...)
3) proper wired system

-@OP why isn't wired an option?

[samzyr]

to much work to wire at this point.

[youG]

You can get regular wireless alarm systems. They put it on the entries and supposedly it's as good as wired.
  As far as intercoms the best for finished house I think is the built in phones system and you can get door boxes attached. And all u need to do is plug it in to your phone jack.
I happen to be looking into getting both of these now!

[samzyr]

any info would be appreciated. do u have any company that does this type of work? or what model are u referring to?

[churnbabychurn]

My house is fully wired for an alarm system. I refuse to pay $2.5K! to have some one install the system so I'm gonna do it myself...

To start I want to install the magnets/contacts on the windows and doors.

I noticed that there are two types: "normally open" and "normally closed". Which ones should I use, does it make any difference or is the main idea that I be consistent?

TIA!