JPH0471238B2 - - Google Patents

Info

Publication number
JPH0471238B2
JPH0471238B2 JP60212208A JP21220885A JPH0471238B2 JP H0471238 B2 JPH0471238 B2 JP H0471238B2 JP 60212208 A JP60212208 A JP 60212208A JP 21220885 A JP21220885 A JP 21220885A JP H0471238 B2 JPH0471238 B2 JP H0471238B2
Authority
JP
Japan
Prior art keywords
circuit
disconnection
lines
pair
short
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 - Lifetime
Application number
JP60212208A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6273400A (ja
Inventor
Tetsuo Kimura
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.)
Nittan Co Ltd
Original Assignee
Nittan Co Ltd
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 Nittan Co Ltd filed Critical Nittan Co Ltd
Priority to JP21220885A priority Critical patent/JPS6273400A/ja
Publication of JPS6273400A publication Critical patent/JPS6273400A/ja
Publication of JPH0471238B2 publication Critical patent/JPH0471238B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)
JP21220885A 1985-09-27 1985-09-27 警報装置 Granted JPS6273400A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21220885A JPS6273400A (ja) 1985-09-27 1985-09-27 警報装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21220885A JPS6273400A (ja) 1985-09-27 1985-09-27 警報装置

Publications (2)

Publication Number Publication Date
JPS6273400A JPS6273400A (ja) 1987-04-04
JPH0471238B2 true JPH0471238B2 (en]) 1992-11-13

Family

ID=16618715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21220885A Granted JPS6273400A (ja) 1985-09-27 1985-09-27 警報装置

Country Status (1)

Country Link
JP (1) JPS6273400A (en])

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626743B1 (en) * 1993-05-25 1999-09-08 Hochiki Corporation Line fault monitoring apparatus
JP3382370B2 (ja) 1994-08-18 2003-03-04 能美防災株式会社 火災報知設備の伝送線路監視装置
KR101399025B1 (ko) * 2014-02-13 2014-05-30 비아이산업(주) 양방향 통신 기능을 갖는 위험 구역내 설치용 화재 및 가스 감지 시스템

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577100Y2 (en]) * 1977-11-26 1982-02-10

Also Published As

Publication number Publication date
JPS6273400A (ja) 1987-04-04

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