Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 29 - Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
Patents for G08B 29 - Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation (6,872)
09/1986
09/16/1986US4612534 Method of transmitting measuring values in a monitoring system
09/16/1986US4612445 System for monitoring the operation of input circuits to a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines
09/09/1986US4611198 Security and communication system
09/09/1986US4611197 Malfunction-detecting status monitoring system
09/02/1986US4609914 Voltage monitor and alarm for power line
08/1986
08/20/1986EP0191510A1 Self-diagnostic ultrasonic intrusion detection system
08/20/1986CN86100086A Sensor for monitoring installations
08/06/1986EP0189536A1 Infrared intrusion detector
08/05/1986US4604613 Status-indicating current interrupter
07/1986
07/30/1986CN85108116A Security monitoring system
07/22/1986CA1208335A1 Smoke detector with a radiation source operated in a pulse-like or intermittent mode
07/22/1986CA1208334A1 Smoke detector
07/16/1986EP0187180A1 Sensor for monitoring systems
07/16/1986EP0187149A1 Fire sensing and suppression method and system responsive to optical radiation and mechanical wave energy.
07/09/1986EP0187053A1 Composition for testing fire detectors
07/08/1986US4599615 Pager receiver comprising a memory storing a sequence of information signals to be tested
07/08/1986CA1207400A1 System for detecting an alarm
07/02/1986EP0186226A1 Intrusion detection system with an anti-masking device
07/02/1986CA1207052A Remote signalling apparatus
07/01/1986US4598271 Circuit arrangement for monitoring noise levels of detectors arranged in an alarm installation
06/1986
06/17/1986US4595914 Self-testing combustion products detector
06/10/1986US4594580 Expanded-capacity wireless security system with dual-range environmental monitoring and control
06/10/1986CA1205884A1 Circuit arrangement for monitoring noise levels of detectors arranged in an alarm installation
06/03/1986US4593274 Remote signalling apparatus, particularly suitable for remote surveillance purposes
05/1986
05/27/1986CA1205158A1 Infrared detector for determining the presence of an intruder in a monitored area
05/27/1986CA1205138A1 Security alarm system
04/1986
04/30/1986EP0179681A1 Room safety device
04/22/1986CA1203629A1 Sense point monitor circuit
04/09/1986CN85200129U Digital cycle meter with automatic alarm
04/08/1986US4581604 Atmospheric abnormality detection alarm system
04/01/1986CA1202682A1 Pager receiver comprising a memory storing a sequence of information signals to be tested
03/1986
03/26/1986EP0175127A1 Alarm System Diagnostic Apparatus
03/26/1986EP0175032A1 Microprocessor-controlled fire sensor
03/25/1986US4578671 Remote indicating low battery voltage enunciator method and apparatus
03/18/1986US4577184 Security system with randomly modulated probe signal
03/11/1986US4575712 Communication system
03/11/1986US4575711 Alarm terminal device
03/11/1986US4575710 Automatic testing system electrical transmitters
03/04/1986CA1201505A1 Monitoring system including a number of measuring stations series connected to a signal line
02/1986
02/25/1986US4573040 Fail-safe instrument system
02/19/1986EP0171459A1 Monitoring system
02/04/1986US4568935 Data reporting system
02/04/1986US4568924 Method of and apparatus for signalling an alarm
02/04/1986US4568923 Fire alarm system
02/04/1986US4568919 Monitoring system including a number of measuring stations series connected to a signal line
01/1986
01/28/1986US4567472 Security-ensuring apparatus having an operational guidance function
01/16/1986WO1986000450A1 Fire sensing and suppression method and system responsive to optical radiation and mechanical wave energy
01/07/1986US4563672 Microprocessor automatic program fail reset circuit
12/1985
12/31/1985US4562428 Intrusion detector
12/17/1985US4559526 Security alarm system
12/17/1985US4559453 Smoke detector with a radiation source operated in a pulse-like or intermittent mode
12/04/1985EP0162921A1 Fiber optics system with self test capability
12/03/1985US4556873 Fire alarm system
11/1985
11/26/1985US4555634 Optical smoke detector with contamination detection circuitry
11/19/1985US4554533 Method of and apparatus for the testing of warning systems
11/19/1985CA1196983A1 Multi-operation mode type of security-ensuring apparatus
11/12/1985US4553140 Power supply control circuit
11/12/1985CA1196707A1 Security-ensuring apparatus having an operational guidance function
11/05/1985US4551710 Method and apparatus for reporting dangerous conditions
10/1985
10/22/1985US4549169 Personal ocean security system
10/22/1985CA1195753A1 Ir intrusion detector with optical pattern locators
10/16/1985EP0158023A1 Method and circuit arrangement for monitoring the operation of ultrasonic alarm systems
10/16/1985EP0158022A1 Method and circuit arrangement for monitoring the operation of ultrasonic alarm systems
10/15/1985US4547770 Battery voltage checking apparatus
10/15/1985CA1195409A1 Radiation detection apparatus
10/09/1985EP0157117A1 Testing device for an intrusion-signalling apparatus
10/01/1985US4544921 Fire alarm system
10/01/1985US4544910 Exit sign lamp flashing system with self-checking provisions
10/01/1985CA1194573A1 Method and apparatus for identifying the location of a change in state of a part of an electrical circuit
09/1985
09/25/1985EP0155773A2 Communication system
09/24/1985US4543568 Burglar alarm with re-entry feature
09/24/1985US4543565 Method and apparatus for monitoring an alarm system
09/17/1985US4542489 Object detecting system of reflection type
09/11/1985EP0153959A1 Test device for an optical infra red detector
09/10/1985US4541029 Over-load and light-load protection for electric machinery
09/03/1985US4539556 Combustion products detector with accelerated test
08/1985
08/27/1985US4538137 Fire detector
08/20/1985US4536753 Self monitoring intruder detecting system of noise-cancelling vibration detectors
08/20/1985US4536751 System for detecting an alarm
08/20/1985US4536749 Security-ensuring apparatus having an operational guidance function
08/20/1985US4536748 Process for protecting a remote monitoring system against sabotage and a system using this process
08/20/1985US4535598 Method and control system for verifying sensor operation in a refrigeration system
08/15/1985WO1985003591A1 Method and circuit arrangement for the function control of ultra-sound alarm installation
08/15/1985WO1985003590A1 Method and circuit arrangement for the operation control of ultrasound alarm installations
08/15/1985WO1985003589A1 Test device for intrusion warning device
07/1985
07/24/1985EP0149097A2 Method and arrangement for the failsafe alarm evaluation of a signal line of a hazard signal arrangement
07/16/1985US4529971 Alarm loop supervision
07/16/1985US4529881 Flame detector with test lamp and adjustable field of view
07/16/1985US4529874 Motion detector for space surveillance
07/10/1985EP0147385A1 A locality supervision system.
07/09/1985US4528610 Short circuit fault isolation means for electrical circuit arrangements
07/09/1985US4528555 Light extinction smoke detector
07/09/1985US4528553 Event detection apparatus
07/04/1985WO1985002476A3 Fiber optics system with self test capability
06/1985
06/25/1985US4525699 Electronic monitoring system with malfunction indicator
06/25/1985CA1189610A1 Remote acoustic monitoring device which is testable by variation of the supply voltage
06/19/1985EP0144897A2 Fiber optics system with self test capability
06/18/1985US4524354 Apparatus and method for monitoring remote security zones
06/18/1985CA1189179A1 Automatic cab signal test set
06/12/1985EP0144250A2 Fire alarm systems with incipient hyper-sensitivity monitoring
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