KR890011401U - Fire detector disconnection protection device and non-polar operation circuit of the indicator - Google Patents

Fire detector disconnection protection device and non-polar operation circuit of the indicator

Info

Publication number
KR890011401U
KR890011401U KR2019870020250U KR870020250U KR890011401U KR 890011401 U KR890011401 U KR 890011401U KR 2019870020250 U KR2019870020250 U KR 2019870020250U KR 870020250 U KR870020250 U KR 870020250U KR 890011401 U KR890011401 U KR 890011401U
Authority
KR
South Korea
Prior art keywords
indicator
protection device
operation circuit
fire detector
disconnection protection
Prior art date
Application number
KR2019870020250U
Other languages
Korean (ko)
Other versions
KR910002979Y1 (en
Inventor
박병선
Original Assignee
동방전자산업 주식회사
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 동방전자산업 주식회사 filed Critical 동방전자산업 주식회사
Priority to KR2019870020250U priority Critical patent/KR910002979Y1/en
Publication of KR890011401U publication Critical patent/KR890011401U/en
Application granted granted Critical
Publication of KR910002979Y1 publication Critical patent/KR910002979Y1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Electromagnetism (AREA)
  • Fire Alarms (AREA)
KR2019870020250U 1987-11-23 1987-11-23 A fire sensor and a non-polarity circuit in the indication implement KR910002979Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870020250U KR910002979Y1 (en) 1987-11-23 1987-11-23 A fire sensor and a non-polarity circuit in the indication implement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870020250U KR910002979Y1 (en) 1987-11-23 1987-11-23 A fire sensor and a non-polarity circuit in the indication implement

Publications (2)

Publication Number Publication Date
KR890011401U true KR890011401U (en) 1989-07-13
KR910002979Y1 KR910002979Y1 (en) 1991-05-03

Family

ID=19269666

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870020250U KR910002979Y1 (en) 1987-11-23 1987-11-23 A fire sensor and a non-polarity circuit in the indication implement

Country Status (1)

Country Link
KR (1) KR910002979Y1 (en)

Also Published As

Publication number Publication date
KR910002979Y1 (en) 1991-05-03

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Legal Events

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Payment date: 20020418

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