FR2306488A1 - Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area - Google Patents

Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area

Info

Publication number
FR2306488A1
FR2306488A1 FR7510990A FR7510990A FR2306488A1 FR 2306488 A1 FR2306488 A1 FR 2306488A1 FR 7510990 A FR7510990 A FR 7510990A FR 7510990 A FR7510990 A FR 7510990A FR 2306488 A1 FR2306488 A1 FR 2306488A1
Authority
FR
France
Prior art keywords
alarm system
alarm
detection
certain areas
protected area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7510990A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7510990A priority Critical patent/FR2306488A1/en
Publication of FR2306488A1 publication Critical patent/FR2306488A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The intruder detection and alarm system has at least two contacts the opening of which triggers an alarm warning system. The detection and alarm system has a control board containing electronic circuits with a supply and two timing and detection circuits. It has also two control switches, an operation recorder, an alarm circuit which emits a polarised alarm signal, and at least two detectors (1 per circuit). The recorder has a numerical time counter, to start automatically and simultaneously with triggering of the alarm system. The counter indicates exactly the time which an intruder penetrates into the protected zone. It also verifies that the detection and alarm system was functioning at that moment.
FR7510990A 1975-04-04 1975-04-04 Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area Withdrawn FR2306488A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7510990A FR2306488A1 (en) 1975-04-04 1975-04-04 Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7510990A FR2306488A1 (en) 1975-04-04 1975-04-04 Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area

Publications (1)

Publication Number Publication Date
FR2306488A1 true FR2306488A1 (en) 1976-10-29

Family

ID=9153663

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7510990A Withdrawn FR2306488A1 (en) 1975-04-04 1975-04-04 Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area

Country Status (1)

Country Link
FR (1) FR2306488A1 (en)

Similar Documents

Publication Publication Date Title
DK63781A (en) TV MONITORING EQUIPMENT WITH THEFT ALARMS AND A SAFE SIGHTING DISTANCE
MY110084A (en) Antitheft system and antitheft apparatus
US4523185A (en) Zoned intrusion display with series-connected sensors
DE3267780D1 (en) Surveillance and alarm method and device
US4163968A (en) Supervised loop alarm radio transmitter system
FR2306488A1 (en) Intruder detection and alarm system - detects intruders in certain areas, with control inside or outside protected area
US3530455A (en) Door chime alarm system
GB2126390A (en) Alarm
GB1332270A (en) Fire detecting system
GB1430091A (en) Apparatus for detecting smoke and like suspensions
GB1265022A (en)
FR2243480A1 (en) Surveillance intruder alarm alerting local police - has control clock for setting operative and access periods
JPS57211584A (en) Program timer
KR910001611A (en) Burglar alarm
GB1294312A (en) Improvements in and relating to intruder alarm systems and apparatus therefor
JPS57104882A (en) Power on clear circuit in electronic watch
JPS5465576A (en) Electronic watch with alarm
JPS5251896A (en) Remote central control apparatus
GB1516311A (en) Monitoring devices
GB1465995A (en) Alarm system
JPS5352167A (en) Analog type alarm electronic watch
FR2402908A1 (en) Multichannel anti-intruder surveillance system - has ultrasonic surveillance device coupled to supply via switch controlled by hyperfrequency device
JPS644898A (en) Theft preventing device
JPS56135343A (en) Electronic siren
FR2329030A1 (en) Building break in alarm and detection system - uses HF detector and alarm device which are separated from each other and has active memory

Legal Events

Date Code Title Description
ST Notification of lapse