(19)
(11) EP 1 037 183 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.04.2003 Bulletin 2003/15

(43) Date of publication A2:
20.09.2000 Bulletin 2000/38

(21) Application number: 00650013.6

(22) Date of filing: 02.03.2000
(51) International Patent Classification (IPC)7: G08B 21/00, G01N 33/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 05.03.1999 IE 990186
06.05.1999 IE 990368

(71) Applicant: E.I. Technology Limited
Shannon, County Clare (IE)

(72) Inventors:
  • Byrne, Michael
    Limerick (IE)
  • Duignan, James
    Clonmacken, Limerick (IE)
  • Flynn, Fergus
    Newmarket-on-Fergus, County Clare (IE)
  • Guinee, Michael
    Limerick (IE)

(74) Representative: Weldon, Michael James et al
c/o John A. O'Brien & Associates, Third Floor, Duncairn House, 14 Carysfort Avenue
Blackrock, Co. Dublin
Blackrock, Co. Dublin (IE)

   


(54) A gas sensing alarm device


(57) An alarm device (1) has a circuit (10) with a microcontroller (11) which activates a green LED (4) to indicate normal operation, a yellow LED (6) to indicate if there is a fault, and a red LED (5) to indicate an alert arising from carbon monoxide concentration exceeding a volt. If the user presses a test/hush button (3) the microcontroller indicates the peak concentration since a memory was last reset. Continuing to press the button causes the memory to be reset. This provides peace of mind to the user.






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