Patent ID: 6198389
Filing Date: 2001-03-06
Classification: G08B

Abstract:
An intruder detection system comprising a programmable alarm control panel capable of issuing an alarm signal representative of an intruder in a protected zone and adaptable to electronically couple a plurality of sensors thereto, comprising:a status line electronically coupling said programmable alarm control panel commonly to said plurality of sensors for providing a status signal from said programmable alarm control panel to said plurality of sensors wherein said status signal comprises separate zone status portions corresponding to a distinct zone status for each of said plurality of sensors wherein said zone status is one of a first condition and a second condition;a plurality of zone signalling lines separately coupling said plurality of sensors to said programmable alarm control panel for transmitting sensor zone data from each of said plurality of sensors to said programmable alarm control panel wherein said sensor zone data includes alarm information whether each of said plurality of sensors has detected an alarm condition; andprogramming means in each of said sensors which can be set in a first mode when said sensor has received a zone status portion reflective of said first condition and set in a second mode when said sensor has a received a zone status portion reflective of said second condition.