JPH02138398U - - Google Patents
Info
- Publication number
- JPH02138398U JPH02138398U JP4410189U JP4410189U JPH02138398U JP H02138398 U JPH02138398 U JP H02138398U JP 4410189 U JP4410189 U JP 4410189U JP 4410189 U JP4410189 U JP 4410189U JP H02138398 U JPH02138398 U JP H02138398U
- Authority
- JP
- Japan
- Prior art keywords
- line
- receiver
- repeater
- disaster prevention
- detection means
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 3
- 230000000737 periodic effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4410189U JPH02138398U (es) | 1989-04-15 | 1989-04-15 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4410189U JPH02138398U (es) | 1989-04-15 | 1989-04-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02138398U true JPH02138398U (es) | 1990-11-19 |
Family
ID=31557100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4410189U Pending JPH02138398U (es) | 1989-04-15 | 1989-04-15 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02138398U (es) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62248098A (ja) * | 1986-04-22 | 1987-10-29 | 能美防災株式会社 | 火災報知設備の常時断線監視装置 |
-
1989
- 1989-04-15 JP JP4410189U patent/JPH02138398U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62248098A (ja) * | 1986-04-22 | 1987-10-29 | 能美防災株式会社 | 火災報知設備の常時断線監視装置 |
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