KR910020827U - Door open state alarm circuit - Google Patents

Door open state alarm circuit

Info

Publication number
KR910020827U
KR910020827U KR2019900005845U KR900005845U KR910020827U KR 910020827 U KR910020827 U KR 910020827U KR 2019900005845 U KR2019900005845 U KR 2019900005845U KR 900005845 U KR900005845 U KR 900005845U KR 910020827 U KR910020827 U KR 910020827U
Authority
KR
South Korea
Prior art keywords
open state
door open
alarm circuit
state alarm
circuit
Prior art date
Application number
KR2019900005845U
Other languages
Korean (ko)
Other versions
KR950004842Y1 (en
Inventor
김남룡
Original Assignee
대우전자 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 대우전자 주식회사 filed Critical 대우전자 주식회사
Priority to KR2019900005845U priority Critical patent/KR950004842Y1/en
Publication of KR910020827U publication Critical patent/KR910020827U/en
Application granted granted Critical
Publication of KR950004842Y1 publication Critical patent/KR950004842Y1/en

Links

Classifications

    • 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
    • G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
KR2019900005845U 1990-05-04 1990-05-04 Alarm circuit which senses the state of opened door or closed door KR950004842Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019900005845U KR950004842Y1 (en) 1990-05-04 1990-05-04 Alarm circuit which senses the state of opened door or closed door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019900005845U KR950004842Y1 (en) 1990-05-04 1990-05-04 Alarm circuit which senses the state of opened door or closed door

Publications (2)

Publication Number Publication Date
KR910020827U true KR910020827U (en) 1991-12-20
KR950004842Y1 KR950004842Y1 (en) 1995-06-16

Family

ID=19298373

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900005845U KR950004842Y1 (en) 1990-05-04 1990-05-04 Alarm circuit which senses the state of opened door or closed door

Country Status (1)

Country Link
KR (1) KR950004842Y1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101507343B1 (en) * 2011-11-25 2015-04-06 이상민 Deposit box for safekeeping things

Also Published As

Publication number Publication date
KR950004842Y1 (en) 1995-06-16

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Legal Events

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A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20010529

Year of fee payment: 7

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