Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 26 - Alarm systems in which substations are interrogated in succession by a central station
Patents for G08B 26 - Alarm systems in which substations are interrogated in succession by a central station (1,136)
10/1985
10/16/1985EP0158217A1 Circuit arrangement for a danger-indicating installation
10/02/1985EP0156474A1 Vigilant fire alarm system
09/1985
09/25/1985EP0155773A2 Communication system
09/24/1985US4543565 Method and apparatus for monitoring an alarm system
09/12/1985WO1985004040A1 A multiplexed alarm system
09/12/1985WO1985004039A1 Monitor for an alarm system
08/1985
08/27/1985US4538138 Integrated security system having a multiprogrammed controller
08/27/1985CA1192645A1 Local control apparatus for central station alarm system
08/20/1985US4536748 Process for protecting a remote monitoring system against sabotage and a system using this process
08/13/1985US4535401 Apparatus and method for providing power from master controller to subcontrollers and data communication therebetween
08/06/1985US4533834 Optical fire detection system responsive to spectral content and flicker frequency
07/1985
07/09/1985US4528610 Short circuit fault isolation means for electrical circuit arrangements
07/01/1985EP0058721A4 Ultrasonic communication and security system.
06/1985
06/25/1985US4525700 Fire alarm system
06/18/1985US4524354 Apparatus and method for monitoring remote security zones
05/1985
05/21/1985US4518952 Sensor test circuit of an alarm system
04/1985
04/30/1985US4514720 Method and apparatus for increasing the response sensitivity and the interference resistance in an alarm system
04/17/1985EP0137497A2 Method and arrangement for the analogous transmission of the measured value of the respective fire greatnesses of a plural criterious fire sensor
04/16/1985US4511887 Long range wireless alarm monitoring system
04/02/1985CA1184988A1 Local control apparatus for central station alarm system
03/1985
03/19/1985US4506256 Annunciator control circuit
11/1984
11/21/1984EP0125485A1 Signal suppression circuit for optical smoke detectors
11/21/1984EP0125387A1 Risk signalling method and apparatus
10/1984
10/31/1984EP0123641A2 Improved safety shield control system
10/30/1984CA1177140A1 Sensing and control system
10/16/1984US4477800 Security system
10/16/1984US4477799 Security apparatus with alarm search and verification capability
10/10/1984EP0121102A2 Arrangement for switching individual indicators over to the monitoring operation in a danger alarm system
08/1984
08/28/1984US4468655 Security communications system
07/1984
07/24/1984CA1171514A1 Supervised wireless security system
07/10/1984US4459582 Local control apparatus for central station alarm system
06/1984
06/27/1984EP0111982A1 Integrated security system having a multiprogrammed controller
06/20/1984EP0111178A1 Control device with several detectors connected in chain form to a signal line
05/1984
05/01/1984US4446458 Monitoring and control system
04/1984
04/25/1984EP0106191A1 Multiprocessor system for a danger alarm installation
03/1984
03/21/1984EP0103514A1 System for monitoring a plurality of spatially distributed sensors
03/14/1984EP0102682A2 Apparatus and method for communication
02/1984
02/15/1984EP0100386A1 Improved remote sensing and control system
01/1984
01/31/1984US4429299 Two-way AC power line communications system
01/24/1984US4427974 Local control apparatus for central station alarm system
01/18/1984EP0098760A2 Monitor setting method and monitoring arrangement for a site to be protected
01/18/1984EP0098554A1 Method and device for automatically demanding signal measure values and signal identification in an alarm installation
01/18/1984EP0098553A1 Method and device for automatically demanding signal measure values and/or signal identification in an alarm installation
01/18/1984EP0098552A1 Method and device for automatically demanding signal measure values and signal identification in an alarm installation
11/1983
11/29/1983CA1157924A1 Information reporting multiplex system
11/29/1983CA1157923A1 Scanning control system
11/16/1983EP0094279A1 Method of protecting a telemonitoring system against sabotage and system carrying out this method
11/16/1983EP0093872A1 Method for the transmission of measured values in a control system
10/1983
10/18/1983US4410884 Alarm system
09/1983
09/28/1983EP0089607A1 Mains-wired monitoring and security system
09/13/1983US4404548 Method for transmitting measuring values in a fire alarm system and apparatus for the performance of the aforesaid method
09/07/1983EP0088067A1 Method for remote measurement, remote signalling and remote control, particularly applicable to the detection of fire and intrusion and to illumination
08/1983
08/03/1983EP0084685A1 Alarm control center
08/02/1983CA1151261A1 Two-way ac power line communication system
07/1983
07/27/1983EP0084429A1 Automatic receiver gain control in centralized monitor system
07/05/1983US4392125 Multiplex communication system using remote microprocessors
06/1983
06/22/1983EP0082080A1 Method and apparatus for the transmission of signals, and use in the detection and/or measuring of the concentration of combustible gas in an atmosphere
03/1983
03/31/1983WO1983001139A1 Long range wireless alarm monitoring system
03/01/1983US4375637 Integrated alarm, security, building management, and communications system
01/1983
01/26/1983EP0070449A1 Method and device for increasing the reaction sensitivity and the disturbance security in a hazard, particularly a fire alarm installation
01/04/1983US4367458 Supervised wireless security system
01/04/1983CA1138953A1 Animal identification and estrus detection system
12/1982
12/22/1982EP0067339A2 Method and arrangement for disturbance detection in hazard signalling systems, especially fire signalling systems
11/1982
11/30/1982US4361832 Automatic centralized monitoring system
11/09/1982US4358755 Signal selection circuit
10/1982
10/19/1982CA1134003A1 Central station alarm system
09/1982
09/01/1982EP0058721A1 Ultrasonic communication and security system
08/1982
08/03/1982US4342985 Remote sensing and control system
07/1982
07/13/1982US4339746 Alarm control center
04/1982
04/20/1982CA1122295A1 Automatic centralised monitoring system
03/1982
03/18/1982WO1982000910A1 Ultrasonic communication and security system
03/09/1982CA1119688A1 Sensor monitoring alarm system
12/1981
12/30/1981EP0042501A1 Device for the transmission of measured values in a fire warning system
10/1981
10/28/1981EP0038592A1 Information collecting central station and especially fire detection central station
09/1981
09/15/1981US4290055 Scanning control system
09/09/1981EP0035277A1 Sequential transmission system for connecting without addressing a plurality of subscribers to an exchange
08/1981
08/25/1981US4286117 Danger alarm system
08/04/1981US4282517 Automatic ringback for direct current monitoring system
06/1981
06/11/1981WO1981001624A1 Condition monitoring system
06/02/1981CA1102460A1 Central station system including alternative signal path through commercial telephone network
04/1981
04/14/1981US4262286 Apparatus for monitoring fire and effecting control operation
04/14/1981US4262283 System for transmitting alarm information over telephone lines
03/1981
03/03/1981US4254411 Danger alarm system
02/1981
02/24/1981US4253091 Method and apparatus for detection of alarm conditions
02/24/1981CA1096520A1 System for transmitting alarm information over telephone lines
02/10/1981US4250353 Danger alarm system
10/1980
10/14/1980US4228424 Central station alarm
09/1980
09/16/1980US4223302 Conditions monitoring device
09/09/1980US4222052 Data transmission system
09/09/1980US4222041 Danger alarm system
08/1980
08/20/1980EP0014329A1 Danger signalling installation with a frequency metering device placed in a central post
06/1980
06/03/1980US4206449 Multiple sensor intrusion alarm system
05/1980
05/13/1980US4203096 Sensor monitoring alarm system
04/1980
04/15/1980US4198624 Alarm system
12/1979
12/25/1979US4180801 System for supervising connection points
11/1979
11/01/1979WO1979000844A1 An arrangement for security systems
10/1979
10/31/1979EP0004912A1 Annunciator of danger
10/31/1979EP0004911A1 Annunciator of danger
10/31/1979EP0004910A1 Annunciator of danger
10/31/1979EP0004909A1 Annunciator of danger
1 2 3 4 5 6 7 8 9 10 11 12