DE2408129C2 - - Google Patents

Info

Publication number
DE2408129C2
DE2408129C2 DE19742408129 DE2408129A DE2408129C2 DE 2408129 C2 DE2408129 C2 DE 2408129C2 DE 19742408129 DE19742408129 DE 19742408129 DE 2408129 A DE2408129 A DE 2408129A DE 2408129 C2 DE2408129 C2 DE 2408129C2
Authority
DE
Germany
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
DE19742408129
Other languages
German (de)
Other versions
DE2408129B1 (en
Inventor
Lothar 2060 Bad Oldesloe Rims
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.)
Preussag AG Feuerschutz
Original Assignee
Preussag AG Feuerschutz
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 Preussag AG Feuerschutz filed Critical Preussag AG Feuerschutz
Priority to DE19742408129 priority Critical patent/DE2408129B1/en
Publication of DE2408129B1 publication Critical patent/DE2408129B1/en
Application granted granted Critical
Publication of DE2408129C2 publication Critical patent/DE2408129C2/de
Granted 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
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • 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
    • G08B25/04—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 using a single signalling line, e.g. in a closed loop
    • 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
    • G08B29/043—Monitoring of the detection circuits of fire detection circuits
DE19742408129 1974-02-20 1974-02-20 Alarm device, preferably for fire alarms Granted DE2408129B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742408129 DE2408129B1 (en) 1974-02-20 1974-02-20 Alarm device, preferably for fire alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742408129 DE2408129B1 (en) 1974-02-20 1974-02-20 Alarm device, preferably for fire alarms

Publications (2)

Publication Number Publication Date
DE2408129B1 DE2408129B1 (en) 1975-01-09
DE2408129C2 true DE2408129C2 (en) 1975-08-21

Family

ID=5907946

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742408129 Granted DE2408129B1 (en) 1974-02-20 1974-02-20 Alarm device, preferably for fire alarms

Country Status (1)

Country Link
DE (1) DE2408129B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148708A1 (en) * 1984-01-10 1985-07-17 Gilbert Grand Security device for the surveillance of premises, particularly of dwellings

Also Published As

Publication number Publication date
DE2408129B1 (en) 1975-01-09

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee