JPH0424475Y2 - - Google Patents

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Publication number
JPH0424475Y2
JPH0424475Y2 JP1990101854U JP10185490U JPH0424475Y2 JP H0424475 Y2 JPH0424475 Y2 JP H0424475Y2 JP 1990101854 U JP1990101854 U JP 1990101854U JP 10185490 U JP10185490 U JP 10185490U JP H0424475 Y2 JPH0424475 Y2 JP H0424475Y2
Authority
JP
Japan
Prior art keywords
frequency noise
infrared
high frequency
circuit
infrared 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.)
Expired
Application number
JP1990101854U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0374383U (en:Method
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 JP1990101854U priority Critical patent/JPH0424475Y2/ja
Publication of JPH0374383U publication Critical patent/JPH0374383U/ja
Application granted granted Critical
Publication of JPH0424475Y2 publication Critical patent/JPH0424475Y2/ja
Expired legal-status Critical Current

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  • Burglar Alarm Systems (AREA)
JP1990101854U 1990-09-27 1990-09-27 Expired JPH0424475Y2 (en:Method)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990101854U JPH0424475Y2 (en:Method) 1990-09-27 1990-09-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990101854U JPH0424475Y2 (en:Method) 1990-09-27 1990-09-27

Publications (2)

Publication Number Publication Date
JPH0374383U JPH0374383U (en:Method) 1991-07-25
JPH0424475Y2 true JPH0424475Y2 (en:Method) 1992-06-09

Family

ID=31650780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990101854U Expired JPH0424475Y2 (en:Method) 1990-09-27 1990-09-27

Country Status (1)

Country Link
JP (1) JPH0424475Y2 (en:Method)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6222958Y2 (en:Method) * 1979-08-01 1987-06-11

Also Published As

Publication number Publication date
JPH0374383U (en:Method) 1991-07-25

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