JPH0184183U - - Google Patents
Info
- Publication number
- JPH0184183U JPH0184183U JP1987176971U JP17697187U JPH0184183U JP H0184183 U JPH0184183 U JP H0184183U JP 1987176971 U JP1987176971 U JP 1987176971U JP 17697187 U JP17697187 U JP 17697187U JP H0184183 U JPH0184183 U JP H0184183U
- Authority
- JP
- Japan
- Prior art keywords
- light
- detection device
- active optical
- predetermined frequency
- intruder detection
- 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
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176971U JPH0184183U (enExample) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176971U JPH0184183U (enExample) | 1987-11-20 | 1987-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0184183U true JPH0184183U (enExample) | 1989-06-05 |
Family
ID=31468661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176971U Pending JPH0184183U (enExample) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0184183U (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03154198A (ja) * | 1989-11-10 | 1991-07-02 | Teiou Tsushin Kogyo Kk | 盗難防止システム |
-
1987
- 1987-11-20 JP JP1987176971U patent/JPH0184183U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03154198A (ja) * | 1989-11-10 | 1991-07-02 | Teiou Tsushin Kogyo Kk | 盗難防止システム |