Intrusion detector and method

Details Intrusion detector and method Intrusion detector and method

1982-10-27

1985-10-01

Birmiel, Howard A.

Communications: electrical

Condition responsive indicating system

Specific condition

340328, 340566, G08B 1300, G08B 1500

Patent

active

045449201

ABSTRACT:
Apparatus and method are provided for protecting an unoccupied building. The apparatus includes a noise detector for detecting noises generated by attempts to enter the building. Any noise detected is converted to an electronic signal and conveyed to an activator. The activator turns on a tape player which plays a tape recording of noise such as a barking dog. The noise is played through speakers within the building to give the impression the building is occupied or guarded by a watchdog.

REFERENCES:
patent: 3761912 (1973-09-01), Stettner et al.
patent: 4212007 (1980-07-01), Reyes et al.
patent: 4344071 (1982-08-01), Allen
patent: 4408308 (1983-10-01), Smith et al.

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