EP 0834846 B1 20020123 - Wireless hazard signalling system and method
Title (en)
Wireless hazard signalling system and method
Title (de)
Drahtlose Gefahren-Meldeanlage und Meldeverfahren
Title (fr)
Système de signalisation de risques sans fils et procédé
Publication
Application
Priority
- DE 19506385 A 19950223
- EP 96100688 A 19960118
Abstract (en)
[origin: EP0834846A2] The intruder alarm system has several detectors communicating with a central device (1). This evaluates the alarm condition from the signals provided from the detectors, as transmitted radio signals. The transmitted signals are provided via two different signal frequencies, to include a handshaking signal arrangement. A test transmitter and receiver within the central device use a test signal with at least one of these frequencies for checking the alarm signal transmission channel.
IPC 1-7
IPC 8 full level
G08B 25/10 (2006.01); G08B 29/16 (2006.01); G08B 29/18 (2006.01)
CPC (source: EP)
G08B 25/10 (2013.01); G08B 29/16 (2013.01); G08B 29/188 (2013.01); G08B 25/008 (2013.01)
Designated contracting state (EPC)
AT CH FR GB IT LI
DOCDB simple family (publication)
EP 0729124 A1 19960828; EP 0729124 B1 19980708; AT E168209 T1 19980715; AT E212464 T1 20020215; DE 19506385 C1 19961010; DE 19506385 C2 20020307; EP 0834846 A2 19980408; EP 0834846 A3 19980805; EP 0834846 B1 20020123
DOCDB simple family (application)
EP 96100688 A 19960118; AT 96100688 T 19960118; AT 97122284 T 19960118; DE 19506385 A 19950223; EP 97122284 A 19960118