The National Burglar and Fire Alarm Association- Questions to ask an alarm company before installation
http://www.alarm.org/info_ctr/consumer.htm

ADT- A commercial seller of home and business security devices and services.
http://www.adt.com/resi/

Brinks Home Security –A commercial seller of home and business security devices and  services.
http://brinkshomesecurity.com

Protect America – Installer of GE home security products.
http://protectamerica2.com/?SiteID=456628