JPS5258396A - Device for monitoring disconnection of bell wire for fire alarm - Google Patents

Device for monitoring disconnection of bell wire for fire alarm

Info

Publication number
JPS5258396A
JPS5258396A JP13397875A JP13397875A JPS5258396A JP S5258396 A JPS5258396 A JP S5258396A JP 13397875 A JP13397875 A JP 13397875A JP 13397875 A JP13397875 A JP 13397875A JP S5258396 A JPS5258396 A JP S5258396A
Authority
JP
Japan
Prior art keywords
fire alarm
bell wire
monitoring disconnection
disconnection
monitoring
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.)
Pending
Application number
JP13397875A
Other languages
Japanese (ja)
Inventor
Isao Sasaki
Osamu Endou
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.)
NITSUTAN KK
Nittan Co Ltd
Original Assignee
NITSUTAN KK
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 NITSUTAN KK, Nittan Co Ltd filed Critical NITSUTAN KK
Priority to JP13397875A priority Critical patent/JPS5258396A/en
Publication of JPS5258396A publication Critical patent/JPS5258396A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire Alarms (AREA)
JP13397875A 1975-11-10 1975-11-10 Device for monitoring disconnection of bell wire for fire alarm Pending JPS5258396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13397875A JPS5258396A (en) 1975-11-10 1975-11-10 Device for monitoring disconnection of bell wire for fire alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13397875A JPS5258396A (en) 1975-11-10 1975-11-10 Device for monitoring disconnection of bell wire for fire alarm

Publications (1)

Publication Number Publication Date
JPS5258396A true JPS5258396A (en) 1977-05-13

Family

ID=15117512

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13397875A Pending JPS5258396A (en) 1975-11-10 1975-11-10 Device for monitoring disconnection of bell wire for fire alarm

Country Status (1)

Country Link
JP (1) JPS5258396A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851388U (en) * 1981-09-30 1983-04-07 ニツタン株式会社 Fault detection circuit for fire alarm district bell line

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4222666Y1 (en) * 1965-07-06 1967-12-23
JPS4310533Y1 (en) * 1965-08-31 1968-05-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4222666Y1 (en) * 1965-07-06 1967-12-23
JPS4310533Y1 (en) * 1965-08-31 1968-05-08

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851388U (en) * 1981-09-30 1983-04-07 ニツタン株式会社 Fault detection circuit for fire alarm district bell line
JPS6339820Y2 (en) * 1981-09-30 1988-10-19

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