In Sep. 2004, I contacted Vector Security, Mike Bell, regarding an article in Washington Consumers Checkbook, Vol. 11, No. 2 (Summer/Fall 1999) which indicated that “Glass Breakage Listing Device" sensors were unreliable. That evaluation was based on a study by The Association of Central Monitoring Stations. Since our residential alarm system is based on the use of these sensors for protecting our home, we were very concerned. In response a service technician conducted a check of our in home system on 21 Sep 04. The... read full review »