Called my work number. The recording says "this is not a sales call. You have been referred by a friend or family member..." and goes on to say that they want to install a home wireless system that will be monitored by local law enforcement and emergency personnel at no cost to me. Then asks me to confirm by pressing one or decline and be removed from their list by presing two.
The recording did not state the name of the company "selling" these "free" systems.