Security Alarm System
Original Publication Date: 1978-Jan-01
Included in the Prior Art Database: 2005-Feb-20
A security device providing an audible alarm includes a chassis 3, wherein an audible alarm is driven by batteries to make the system independent of a power source, and a coaxial loop 4 that will initiate the alarm if either an open circuit or a short circuit occurs. Further, once the circuit is opened, reclosing the circuit will not stop the alarm.