JPH0530231Y2 - - Google Patents

Info

Publication number
JPH0530231Y2
JPH0530231Y2 JP12042786U JP12042786U JPH0530231Y2 JP H0530231 Y2 JPH0530231 Y2 JP H0530231Y2 JP 12042786 U JP12042786 U JP 12042786U JP 12042786 U JP12042786 U JP 12042786U JP H0530231 Y2 JPH0530231 Y2 JP H0530231Y2
Authority
JP
Japan
Prior art keywords
light
warning
heater
frost
snow
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 - Lifetime
Application number
JP12042786U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6327992U (2
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 JP12042786U priority Critical patent/JPH0530231Y2/ja
Publication of JPS6327992U publication Critical patent/JPS6327992U/ja
Application granted granted Critical
Publication of JPH0530231Y2 publication Critical patent/JPH0530231Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
JP12042786U 1986-08-07 1986-08-07 Expired - Lifetime JPH0530231Y2 (2)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12042786U JPH0530231Y2 (2) 1986-08-07 1986-08-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12042786U JPH0530231Y2 (2) 1986-08-07 1986-08-07

Publications (2)

Publication Number Publication Date
JPS6327992U JPS6327992U (2) 1988-02-24
JPH0530231Y2 true JPH0530231Y2 (2) 1993-08-02

Family

ID=31008731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12042786U Expired - Lifetime JPH0530231Y2 (2) 1986-08-07 1986-08-07

Country Status (1)

Country Link
JP (1) JPH0530231Y2 (2)

Also Published As

Publication number Publication date
JPS6327992U (2) 1988-02-24

Similar Documents

Publication Publication Date Title
CA1166329A (en) Passive infrared intrusion detection system
US6909370B2 (en) Intruder detection device and intruder detection method
US4752768A (en) Intruder detector with anti-obscuring means
US5486810A (en) Infrared detector for detecting motion and fire and an alarm system including the same
US5499016A (en) Intrusion alarm system
US5196830A (en) Apparatus for supervising objects with regard to overheating
US8039799B2 (en) Motion detection system and method
US5283400A (en) Elevator shaftway intrusion device
JPH09101376A (ja) 受動型赤外線式人体検知装置
JPH01500230A (ja) 物体検知方法と電気光学を用いた装置
EP0289621A1 (en) Passive infrared burglar sensor equipped with visual field interruption monitor mechanism
JPH0530231Y2 (2)
US4314239A (en) Portable electronic alarm device
US6317043B1 (en) Perimeter monitoring system
US4263665A (en) Ultrasonic intrusion alarm system
WO1996006865A1 (en) Infrared intrusion detector with obscuring detecting apparatus
KR20080015486A (ko) 침입자 확인 장치
JP2949286B2 (ja) 減光式二酸化炭素濃度感知器
JP2015125022A (ja) 光学センサ装置
US2086818A (en) Alarm system
KR20000028346A (ko) 교통신호등의 자동 온도조절 장치
CA2220429C (en) System and method for arming an alarm system when an occupant fails to turn the system on
JPS5857715B2 (ja) 降雪感知器
JPH0641158Y2 (ja) 光線式検出器の防滴防曇構造
JPH0525592U (ja) 侵入警報装置