Title (en)

MONITORING DEVICE WITH INFRARED AND RADIO-FREQUENCY SENSOR COMPONENTS

Publication

EP 0255812 A3 19891018 (EN)

Application

EP 87830294 A 19870729

Priority

IT 6764986 A 19860808

Abstract (en)

[origin: EP0255812A2] The device, designed for use in intruder alarm systems, uses a combination of an infrared sensor (11) and a radio-frequency sensor (2, 3) whose operating frequency is substantially in the UHF band.

IPC 1-7

G08B 13/18

IPC 8 full level

G08B 13/19 (2006.01); G08B 13/24 (2006.01)

CPC (source: EP)

G08B 13/19 (2013.01); G08B 13/2494 (2013.01)

Citation (search report)

• [Y] US 3725888 A 19730403 - SOLOMON E
• [Y] EP 0058032 A2 19820818 - RACAL MESL LTD [GB]
• [A] US 3852735 A 19741203 - MATSUDA S, et al
• [A] GB 2012092 A 19790718 - AMERICAN DISTRICT TELEGRAPH CO
• [A] EP 0032593 A2 19810729 - STADELMAYR HANS GUNTHER
• [A] US 4028690 A 19770607 - BUCKLEY NORMAN IAN, et al

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR LI LU NL SE

DOCDB simple family (publication)

EP 0255812 A2 19880210; EP 0255812 A3 19891018; IT 1195131 B 19881012; IT 8667649 A0 19860808

DOCDB simple family (application)

EP 87830294 A 19870729; IT 6764986 A 19860808