GB8332751D0 - Monitored line alarm systems - Google Patents

Monitored line alarm systems

Info

Publication number
GB8332751D0
GB8332751D0 GB838332751A GB8332751A GB8332751D0 GB 8332751 D0 GB8332751 D0 GB 8332751D0 GB 838332751 A GB838332751 A GB 838332751A GB 8332751 A GB8332751 A GB 8332751A GB 8332751 D0 GB8332751 D0 GB 8332751D0
Authority
GB
United Kingdom
Prior art keywords
alarm systems
line alarm
monitored line
monitored
systems
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Withdrawn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
GB838332751A
Other versions
GB2134680A (en
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.)
SOUND DIFFUSION PLC
Original Assignee
SOUND DIFFUSION PLC
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 SOUND DIFFUSION PLC filed Critical SOUND DIFFUSION PLC
Priority to GB08332751A priority Critical patent/GB2134680A/en
Publication of GB8332751D0 publication Critical patent/GB8332751D0/en
Publication of GB2134680A publication Critical patent/GB2134680A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
GB08332751A 1983-02-02 1983-12-08 Monitored line alarm systems Withdrawn GB2134680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08332751A GB2134680A (en) 1983-02-02 1983-12-08 Monitored line alarm systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8302891 1983-02-02
GB08332751A GB2134680A (en) 1983-02-02 1983-12-08 Monitored line alarm systems

Publications (2)

Publication Number Publication Date
GB8332751D0 true GB8332751D0 (en) 1984-01-18
GB2134680A GB2134680A (en) 1984-08-15

Family

ID=26285113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08332751A Withdrawn GB2134680A (en) 1983-02-02 1983-12-08 Monitored line alarm systems

Country Status (1)

Country Link
GB (1) GB2134680A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586451B1 (en) * 1985-08-26 1987-12-24 Securite Automatisme Protectio ANTI-BREAKAGE PROTECTION INSTALLATION OF A CLOSED PREMISES
GB2237461B (en) * 1989-10-09 1993-12-08 Scantronic Ltd Monitoring faults in electrical circuit arrangements
GB9108421D0 (en) * 1991-04-19 1991-06-05 Fulleon Ltd Alarm system
GB2257809A (en) * 1991-07-16 1993-01-20 Lab Craft Limited "alarm system"
GB2269255A (en) * 1992-07-27 1994-02-02 Thorn Security Fire alarm system
IES71512B2 (en) * 1995-08-11 1997-02-12 Cetsa Ltd A security circuit and a security sensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343819A (en) * 1971-05-25 1974-01-16 Kidde & Co Walter Fire alarm monitor
GB1568084A (en) * 1977-04-25 1980-05-21 Maxted C Devices constructed for use in electrical circuits and comprising two separable parts
JPS595955B2 (en) * 1979-07-27 1984-02-08 ホーチキ株式会社 fire alarm
GB2069205B (en) * 1980-02-06 1983-11-30 Maxted C W Device for use in an electrical circuit and comprising two separabel parts
CA1139859A (en) * 1980-03-06 1983-01-18 Peter Humphries Alarm system
GB2112193A (en) * 1981-12-21 1983-07-13 Debex >Circuit for security fences
JPS58134392A (en) * 1982-02-04 1983-08-10 ニツタン株式会社 Fire alarm

Also Published As

Publication number Publication date
GB2134680A (en) 1984-08-15

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)