(19)

(11)

EP 0 725 880 A1

(12)

(43) Date of publication: 14.08.1996 Bulletin 1996/33 (21) Application number: 93906920.0 (22) Date of filing: 26.02.1993

(51) International Patent Classification (IPC):  E05G 1/ 10( . ) G08B 13/ 14( . ) E05G 1/ 14( . ) E05G 1/ 00( . ) (86) International application number: PCT/SE1993/000172 (87) International publication number: WO 1993/018265 (16.09.1993 Gazette 1993/22)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 10.03.1992 SE 19920000757 (71) Applicant: SECURITAS AB S-102 28 Stockholm (SE)	(72) Inventor: ÖSTERBERG, Anders S-172 31 Sundbyberg (SE) (74) Representative: Henningsson, Gunnar, et al  AWAPATENT AB, Box 45086 104 30 Stockholm 104 30 Stockholm (SE)