GB2312312B - A mains powered alarm sensor unit having a primary battery backup - Google Patents

A mains powered alarm sensor unit having a primary battery backup

Info

Publication number
GB2312312B
GB2312312B GB9621476A GB9621476A GB2312312B GB 2312312 B GB2312312 B GB 2312312B GB 9621476 A GB9621476 A GB 9621476A GB 9621476 A GB9621476 A GB 9621476A GB 2312312 B GB2312312 B GB 2312312B
Authority
GB
United Kingdom
Prior art keywords
sensor unit
primary battery
battery backup
alarm sensor
mains powered
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 - Fee Related
Application number
GB9621476A
Other versions
GB9621476D0 (en
GB2312312A (en
Inventor
Michael Byrne
Michael Guinee
James Duignan
Keith Fawcett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EI Technology Ltd
Original Assignee
EI Technology Ltd
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 by EI Technology Ltd filed Critical EI Technology Ltd
Publication of GB9621476D0 publication Critical patent/GB9621476D0/en
Publication of GB2312312A publication Critical patent/GB2312312A/en
Application granted granted Critical
Publication of GB2312312B publication Critical patent/GB2312312B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/181—Prevention or correction of operating errors due to failing power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Mounting, Suspending (AREA)
  • Fire-Detection Mechanisms (AREA)
GB9621476A 1996-04-15 1996-10-15 A mains powered alarm sensor unit having a primary battery backup Expired - Fee Related GB2312312B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IES960286 1996-04-15

Publications (3)

Publication Number Publication Date
GB9621476D0 GB9621476D0 (en) 1996-12-04
GB2312312A GB2312312A (en) 1997-10-22
GB2312312B true GB2312312B (en) 2000-02-09

Family

ID=46799383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9621476A Expired - Fee Related GB2312312B (en) 1996-04-15 1996-10-15 A mains powered alarm sensor unit having a primary battery backup

Country Status (2)

Country Link
GB (1) GB2312312B (en)
IE (1) IES70922B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IES990426A2 (en) * 1999-04-13 2000-11-15 E I Technology Ltd An alarm device
US6362743B1 (en) * 1999-09-09 2002-03-26 Ranco Incorporated Of Delaware Smoke alarm with dual sensing technologies and dual power sources
GB2359649B (en) * 2000-02-25 2004-06-16 Delaware Electronic Technology Alarm unit
DE202005018566U1 (en) * 2005-11-25 2007-03-29 Gira Giersiepen Gmbh & Co. Kg Electric device with battery compartment
AU2008200075B1 (en) * 2008-01-08 2009-06-11 Psa Products Pty Ltd Alarm device
GB201919457D0 (en) * 2019-12-31 2020-02-12 Essence Security International Esi Ltd Security device
GB202006312D0 (en) * 2020-04-29 2020-06-10 Essence Security International Esi Ltd Security device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887073A (en) * 1988-04-08 1989-12-12 Matsushita Electric Works, Ltd. Ceiling mounted fire detector assembly
EP0346152A2 (en) * 1988-06-10 1989-12-13 James Cairney Smoke detector devices and detector circuit
US5280273A (en) * 1992-12-21 1994-01-18 Goldstein Mark K Toxic gas detector system having convenient battery and sensor replacement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887073A (en) * 1988-04-08 1989-12-12 Matsushita Electric Works, Ltd. Ceiling mounted fire detector assembly
EP0346152A2 (en) * 1988-06-10 1989-12-13 James Cairney Smoke detector devices and detector circuit
US5280273A (en) * 1992-12-21 1994-01-18 Goldstein Mark K Toxic gas detector system having convenient battery and sensor replacement

Also Published As

Publication number Publication date
IES70922B2 (en) 1997-01-15
GB9621476D0 (en) 1996-12-04
GB2312312A (en) 1997-10-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20051015