GB8519638D0 - Alarm system - Google Patents

Alarm system

Info

Publication number
GB8519638D0
GB8519638D0 GB858519638A GB8519638A GB8519638D0 GB 8519638 D0 GB8519638 D0 GB 8519638D0 GB 858519638 A GB858519638 A GB 858519638A GB 8519638 A GB8519638 A GB 8519638A GB 8519638 D0 GB8519638 D0 GB 8519638D0
Authority
GB
United Kingdom
Prior art keywords
alarm system
alarm
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.)
Granted
Application number
GB858519638A
Other versions
GB2178878A (en
GB2178878B (en
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.)
Apollo Fire Detectors Ltd
Original Assignee
Apollo Fire Detectors 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 Apollo Fire Detectors Ltd filed Critical Apollo Fire Detectors Ltd
Priority to GB08519638A priority Critical patent/GB2178878B/en
Publication of GB8519638D0 publication Critical patent/GB8519638D0/en
Publication of GB2178878A publication Critical patent/GB2178878A/en
Application granted granted Critical
Publication of GB2178878B publication Critical patent/GB2178878B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
GB08519638A 1985-08-05 1985-08-05 Alarm system with priority override Expired GB2178878B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08519638A GB2178878B (en) 1985-08-05 1985-08-05 Alarm system with priority override

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08519638A GB2178878B (en) 1985-08-05 1985-08-05 Alarm system with priority override

Publications (3)

Publication Number Publication Date
GB8519638D0 true GB8519638D0 (en) 1985-09-11
GB2178878A GB2178878A (en) 1987-02-18
GB2178878B GB2178878B (en) 1989-01-18

Family

ID=10583334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08519638A Expired GB2178878B (en) 1985-08-05 1985-08-05 Alarm system with priority override

Country Status (1)

Country Link
GB (1) GB2178878B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101199A (en) * 1987-09-30 1992-03-31 Kabushiki Kaisha Toshiba Polling method and apparatus
IT9004965U1 (en) * 1990-12-07 1992-06-08 G P B Beghelli S R L Ora Begnelli S R L IMPROVEMENT IN INDEPENDENT EMERGENCY LIGHTING SYSTEMS WITH FIRE, HARMFUL GAS, AIR POLLUTION INDICATORS AND SIMILAR
US5790018A (en) * 1993-10-19 1998-08-04 Nohmi Bosai Ltd. Fire alarm system
US5525962A (en) * 1994-06-23 1996-06-11 Pittway Corporation Communication system and method
US6691172B1 (en) 1998-12-15 2004-02-10 Honeywell International, Inc. Communication system for defining a variable group of processors for receiving a transmitted communication
GB2457307A (en) * 2008-02-11 2009-08-12 Apollo Fire Detectors Ltd Fire alarm signalling with voice modulated HF signal multiplexed on to plateaus of existing lower frequency pulses carried on power cabling
GB2471860B (en) 2009-07-14 2011-12-07 Apollo Fire Detectors Ltd Signal and devices for wired networks
GB2506117B (en) * 2012-09-19 2014-08-06 Apollo Fire Detectors Ltd Wired data communications network
CN107104867A (en) * 2017-04-24 2017-08-29 珠海格力电器股份有限公司 The communication means and master-slave system of master-slave system
GB2604049B (en) * 2021-02-19 2023-05-17 Pyronix Ltd Alarm system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB967795A (en) * 1960-02-12 1964-08-26 Westinghouse Brake & Signal Improvements relating to remote control and/or indication systems
GB1415824A (en) * 1974-02-14 1975-11-26 Int Standard Electric Corp Addressing system
US4652853A (en) * 1983-08-15 1987-03-24 Honda Giken Kogyo Kabushiki Kaisha Multiple communication system for vehicular bodies

Also Published As

Publication number Publication date
GB2178878A (en) 1987-02-18
GB2178878B (en) 1989-01-18

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20050804