(19)
(11) EP 0 954 835 A1

(12)

(43) Date of publication:
10.11.1999 Bulletin 1999/45

(21) Application number: 98901288.0

(22) Date of filing: 27.01.1998
(51) International Patent Classification (IPC): 
G08B 13/ 191( . )
(86) International application number:
PCT/CA1998/000051
(87) International publication number:
WO 1998/033154 (30.07.1998 Gazette 1998/30)
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 27.01.1997 CA 19972196014

(71) Applicant: DIGITAL SECURITY CONTROLS LTD.
Downsview, Ontario M3J 2J6 (CA)

(72) Inventors:
  • PILDNER, Reinhart, K.
    Brampton, Ontario L6V 1Z9 (CA)
  • McKENZIE, David
    Brampton, Ontario L6X 3R8 (CA)

(74) Representative: Brooks, Nigel Samuel 
Hill Hampton East Meon
Petersfield Hampshire GU32 1QN
Petersfield Hampshire GU32 1QN (GB)

   


(54) SIZE DISCRIMINATING DUAL ELEMENT PIR DETECTOR