GB2138187B - Burglar alarm system - Google Patents

Burglar alarm system

Info

Publication number
GB2138187B
GB2138187B GB08309551A GB8309551A GB2138187B GB 2138187 B GB2138187 B GB 2138187B GB 08309551 A GB08309551 A GB 08309551A GB 8309551 A GB8309551 A GB 8309551A GB 2138187 B GB2138187 B GB 2138187B
Authority
GB
United Kingdom
Prior art keywords
alarm system
burglar alarm
burglar
alarm
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.)
Expired
Application number
GB08309551A
Other versions
GB2138187A (en
Inventor
John Malcolm Morrison
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 GB08309551A priority Critical patent/GB2138187B/en
Priority to EP84302290A priority patent/EP0125011A1/en
Publication of GB2138187A publication Critical patent/GB2138187A/en
Application granted granted Critical
Publication of GB2138187B publication Critical patent/GB2138187B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
GB08309551A 1983-04-08 1983-04-08 Burglar alarm system Expired GB2138187B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08309551A GB2138187B (en) 1983-04-08 1983-04-08 Burglar alarm system
EP84302290A EP0125011A1 (en) 1983-04-08 1984-04-04 Burglar alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08309551A GB2138187B (en) 1983-04-08 1983-04-08 Burglar alarm system

Publications (2)

Publication Number Publication Date
GB2138187A GB2138187A (en) 1984-10-17
GB2138187B true GB2138187B (en) 1986-09-10

Family

ID=10540804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08309551A Expired GB2138187B (en) 1983-04-08 1983-04-08 Burglar alarm system

Country Status (2)

Country Link
EP (1) EP0125011A1 (en)
GB (1) GB2138187B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2425187B (en) * 2005-04-15 2010-09-22 P G Drives Technology Ltd Electronic control system
FR2897968B1 (en) * 2006-02-24 2008-11-21 Airbus France Sas FIRE DETECTION SYSTEM AND AIRCRAFT EQUIPPED WITH SUCH A SYSTEM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2239318A1 (en) * 1972-08-10 1974-02-21 Nigel Wickham Lewis ELECTRIC ALARM SYSTEM
US4118700A (en) * 1977-05-31 1978-10-03 Rca Corporation Single wire transmission of multiple switch operations
US4359721A (en) * 1978-10-16 1982-11-16 American District Telegraph Company Two-wire multi-zone alarm system
DE2935335C2 (en) * 1979-08-31 1985-08-08 Siemens AG, 1000 Berlin und 8000 München DC alarm system
DE3043357C2 (en) * 1980-11-17 1985-01-17 Siemens AG, 1000 Berlin und 8000 München Method and device for measuring resistance on a signal line
GB2117150B (en) * 1982-02-26 1986-03-19 Morrison John M Intruder alarm system

Also Published As

Publication number Publication date
GB2138187A (en) 1984-10-17
EP0125011A1 (en) 1984-11-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee