JPH047382U - - Google Patents

Info

Publication number
JPH047382U
JPH047382U JP4725490U JP4725490U JPH047382U JP H047382 U JPH047382 U JP H047382U JP 4725490 U JP4725490 U JP 4725490U JP 4725490 U JP4725490 U JP 4725490U JP H047382 U JPH047382 U JP H047382U
Authority
JP
Japan
Prior art keywords
area
infrared rays
light
detection device
intrusion 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
Application number
JP4725490U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP4725490U priority Critical patent/JPH047382U/ja
Publication of JPH047382U publication Critical patent/JPH047382U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
JP4725490U 1990-05-02 1990-05-02 Pending JPH047382U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4725490U JPH047382U (enrdf_load_stackoverflow) 1990-05-02 1990-05-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4725490U JPH047382U (enrdf_load_stackoverflow) 1990-05-02 1990-05-02

Publications (1)

Publication Number Publication Date
JPH047382U true JPH047382U (enrdf_load_stackoverflow) 1992-01-23

Family

ID=31563024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4725490U Pending JPH047382U (enrdf_load_stackoverflow) 1990-05-02 1990-05-02

Country Status (1)

Country Link
JP (1) JPH047382U (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54505A (en) * 1977-06-03 1979-01-05 Hitachi Ltd Identifying system of types of incoming lines
JPS62134603A (ja) * 1985-12-06 1987-06-17 Omron Tateisi Electronics Co 光電スイツチ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54505A (en) * 1977-06-03 1979-01-05 Hitachi Ltd Identifying system of types of incoming lines
JPS62134603A (ja) * 1985-12-06 1987-06-17 Omron Tateisi Electronics Co 光電スイツチ

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