JPS6174185U - - Google Patents
Info
- Publication number
- JPS6174185U JPS6174185U JP15621884U JP15621884U JPS6174185U JP S6174185 U JPS6174185 U JP S6174185U JP 15621884 U JP15621884 U JP 15621884U JP 15621884 U JP15621884 U JP 15621884U JP S6174185 U JPS6174185 U JP S6174185U
- Authority
- JP
- Japan
- Prior art keywords
- pair
- receiver side
- signal lines
- disconnection
- loop
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fire Alarms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984156218U JPH0353349Y2 (bs) | 1984-10-16 | 1984-10-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984156218U JPH0353349Y2 (bs) | 1984-10-16 | 1984-10-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6174185U true JPS6174185U (bs) | 1986-05-20 |
JPH0353349Y2 JPH0353349Y2 (bs) | 1991-11-21 |
Family
ID=30714227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1984156218U Expired JPH0353349Y2 (bs) | 1984-10-16 | 1984-10-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0353349Y2 (bs) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017510917A (ja) * | 2014-02-13 | 2017-04-13 | ビー−アイ・インダストリアル・カンパニー、リミテッド | 双方向通信機能を有する危険区域内取付用の火災及びガス検知システム |
JP2019106023A (ja) * | 2017-12-13 | 2019-06-27 | ホーチキ株式会社 | 火災報知設備及びブースター |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52153698A (en) * | 1976-06-17 | 1977-12-20 | Hochiki Co | Device for detecting disconnection of fire alarm facility |
JPS56169748U (bs) * | 1980-05-20 | 1981-12-15 | ||
JPS57176493A (en) * | 1981-04-24 | 1982-10-29 | Hochiki Co | Alarm facility |
JPS5981787A (ja) * | 1982-11-01 | 1984-05-11 | 松下電器産業株式会社 | 自動火災報知装置 |
-
1984
- 1984-10-16 JP JP1984156218U patent/JPH0353349Y2/ja not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52153698A (en) * | 1976-06-17 | 1977-12-20 | Hochiki Co | Device for detecting disconnection of fire alarm facility |
JPS56169748U (bs) * | 1980-05-20 | 1981-12-15 | ||
JPS57176493A (en) * | 1981-04-24 | 1982-10-29 | Hochiki Co | Alarm facility |
JPS5981787A (ja) * | 1982-11-01 | 1984-05-11 | 松下電器産業株式会社 | 自動火災報知装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017510917A (ja) * | 2014-02-13 | 2017-04-13 | ビー−アイ・インダストリアル・カンパニー、リミテッド | 双方向通信機能を有する危険区域内取付用の火災及びガス検知システム |
JP2019106023A (ja) * | 2017-12-13 | 2019-06-27 | ホーチキ株式会社 | 火災報知設備及びブースター |
JP2022084786A (ja) * | 2017-12-13 | 2022-06-07 | ホーチキ株式会社 | 伝送路断線位置検出装置及びブースター |
Also Published As
Publication number | Publication date |
---|---|
JPH0353349Y2 (bs) | 1991-11-21 |
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