Alarm system backup

Details Alarm system backup Alarm system backup

1996-09-17

1998-06-16

Kuntz, Curtis

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Monitoring

379 51, 340540, 340652, H04M 124

Patent

active

057683433

ABSTRACT:
A security system add-on device is disclosed that provides a false phone line apparatus for tricking an intruder into believing that they have cut the building phone line. The apparatus includes a close loop wire pair that acts as a false phone line and is coupled to a false line cut detector. When the false line is cut, the cut detector signals the security system that a breach of security has occurred.

REFERENCES:
patent: 4736196 (1988-04-01), McMahon et al.
patent: 4737776 (1988-04-01), Wireman
patent: 4945872 (1990-08-01), Embry
patent: 5440177 (1995-08-01), Bellin et al.

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