| 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) |
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| 09/01/1999 | EP0938423A1 Method of automatically adapting setpoint inputs for a danger zone monitoring system and arrangement for carrying out this method |
| 08/31/1999 | US5945924 Using carbon dioxide |
| 08/31/1999 | US5945915 Computer system for sending an alert signal over a network when a cover of said system has been opened |
| 08/31/1999 | CA2042247C Alarm condition detecting method and apparatus |
| 08/24/1999 | US5942981 Low battery detector for a wireless sensor |
| 08/24/1999 | US5942976 Passive infrared intrusion detector and its use |
| 08/19/1999 | WO1999041820A1 Advanced battery controller with state of charge control |
| 08/19/1999 | CA2319459A1 Advanced battery controller with state of charge control |
| 08/10/1999 | US5936666 Security sensor arrangement |
| 08/10/1999 | US5936533 Method of automatic verification of smoke detector operation within calibration limits |
| 08/10/1999 | US5936524 Intrusion detector |
| 08/03/1999 | US5933078 Multi-station dangerous condition alarm system incorporating alarm and chirp origination feature |
| 08/03/1999 | US5933077 Apparatus and method for detecting undesirable connections in a system |
| 07/28/1999 | CN1224207A Test apparatus for testing detectors |
| 07/27/1999 | US5929781 Radio frequency controlled system for testing emergency lighting units |
| 07/21/1999 | CN2330027Y 门禁控制器 Access Controller |
| 07/14/1999 | CN1222715A Anti-theft monitoring device and equipment |
| 07/08/1999 | WO1999034342A1 Method and apparatus for detecting and reporting a power outage |
| 07/07/1999 | EP0928055A1 Method for centralised telecontrol of a plurality of emergency lighting units and emergency lighting installation applying the method |
| 07/06/1999 | US5920259 Motion detection with RFI/EMI protection |
| 07/01/1999 | WO1999019586A8 Lock managing a parameter related to the surroundings |
| 06/30/1999 | CN2327027Y Monitor |
| 06/29/1999 | US5917417 Method of detecting the content of impurity in a gaseous medium |
| 06/29/1999 | US5917409 Process and system for reducing motion-type false alarm of security alarm system |
| 06/22/1999 | US5914667 Advanced embedded code hopping system having master fixed code encryption |
| 06/22/1999 | US5914656 Environmental condition detector transmitter interface |
| 06/22/1999 | US5914655 Self-compensating intruder detector system |
| 06/22/1999 | US5914489 Continuous optical path monitoring of optical flame and radiation detectors |
| 06/15/1999 | US5912620 Combined type intrusion and attack sensing means |
| 06/10/1999 | DE19855856A1 Antitheft-security device for fixing element in vehicle |
| 06/09/1999 | EP0920688A1 Improvements relating to event detection and recordal |
| 06/03/1999 | WO1999027335A1 Object presence detection using dual wavelength bands |
| 06/02/1999 | EP0919973A2 Double technology combined alarm system with a contained and controlled consumption |
| 06/02/1999 | EP0919888A1 Data transfer apparatus |
| 06/01/1999 | CA2254708A1 Intelligent speaker controller for a fire alarm system |
| 05/19/1999 | EP0777895A4 Self-contained, self-adjusting smoke detector and method of operating it |
| 05/19/1999 | EP0712522B1 Smoke detection system |
| 05/18/1999 | US5905438 For detecting the existence of a hazardous condition in an area |
| 05/12/1999 | EP0914957A2 Thermal head and method for manufacturing same |
| 05/06/1999 | WO1999022351A1 Electrical current saving combined smoke and fire detector |
| 05/06/1999 | EP0755551B1 Fault monitoring event detection device |
| 05/04/1999 | US5900806 Alarm sensor multiplexing |
| 04/28/1999 | EP0911776A2 Alarm system and method |
| 04/27/1999 | US5898368 Test indicator control circuit for security alarm device |
| 04/22/1999 | WO1999019586A1 Lock managing a parameter related to the surroundings |
| 04/21/1999 | EP0910055A2 Test apparatus for testing detectors |
| 04/20/1999 | US5896091 Dangerous condition warning device incorporating a replaceable sensor and apparatus to prevent the sensor from being improperly installed |
| 04/13/1999 | CA2127780C Method of analyzing signal quality |
| 04/07/1999 | EP0815459B1 Circuitry and process for testing non-intermittent signal generators |
| 03/31/1999 | EP0904582A1 Random interval personal monitoring system |
| 03/30/1999 | US5889905 Apparatus and method for monitoring optical fibers |
| 03/30/1999 | US5889855 Telephone line access box enclosure |
| 03/24/1999 | EP0903879A2 Apparatus and method for monitoring optical fibers |
| 03/24/1999 | EP0903708A1 Fire detector |
| 03/23/1999 | US5886638 Method and apparatus for testing a carbon monoxide sensor |
| 03/23/1999 | US5886622 Alarm system with sensor signal evaluator |
| 03/19/1999 | WO1999016035A1 Embedded code hopping system with bypass mode |
| 03/16/1999 | US5883577 Multi station smoke detectors |
| 03/16/1999 | US5883573 Message generation supervision system |
| 03/10/1999 | EP0901113A2 Insect repulsion |
| 03/04/1999 | WO1999010855A1 Evacuation alarm intended to work in buildings and small regions |
| 03/03/1999 | EP0898771A1 An electronic intrusion detection system for monitored environments |
| 03/03/1999 | CN1209896A Method for dynamically adjusting fire detection cirteria |
| 03/02/1999 | US5877688 Thermal object measuring apparatus |
| 02/18/1999 | WO1999008246A1 Carbon monoxide and smoke detection apparatus |
| 02/18/1999 | DE19735005A1 Household appliance testing and switching off method |
| 02/18/1999 | DE19706612C2 Optoelektronische Vorrichtung Optoelectronic device |
| 02/18/1999 | CA2303274A1 Carbon monoxide and smoke detection apparatus |
| 02/17/1999 | CN1208211A Fire alarm |
| 02/16/1999 | US5872519 System for monitoring and controlling an area |
| 02/16/1999 | US5872512 Apparatus and method for reducing errors in a battery operated sensing circuit |
| 02/11/1999 | WO1999006980A1 Multi-station dangerous condition alarm system incorporating alarm and chirp origination feature |
| 02/10/1999 | EP0829138A4 Multiple transmission channel group transmitter |
| 02/10/1999 | CN1042062C Detection system with receptor and process for implementation of device to verify functioning of this detection system |
| 02/02/1999 | US5867775 Fail-safe signal transmitting apparatus producing a logical product of an input signal and a carrier signal |
| 02/02/1999 | US5867096 Method for signal degradation alarm detection and cancellation in synchronous digital microwave system |
| 02/02/1999 | US5867095 Module tamper detection circuitry |
| 02/02/1999 | US5867091 Vehicle security system |
| 02/02/1999 | CA1340370C Control system for fire suppression apparatus |
| 01/19/1999 | US5862201 Redundant alarm monitoring system |
| 01/13/1999 | EP0890932A1 Method for processing the signals of a hazard warning sensor and circuit for carrying out this method |
| 01/13/1999 | CN1205094A Method for analyzing signal of danger alarm system and denger alarm system for implementing said method |
| 01/12/1999 | US5859706 Photoelectric smoke detector and disaster monitoring system using the photoelectric smoke detector |
| 01/05/1999 | US5856780 Semiconductor sensors and method for detecting fires using such sensors |
| 01/05/1999 | CA2102997C Intrusion alarm with independent trouble evaluation |
| 12/17/1998 | WO1998046455A3 Method for protecting devices, specially car radios, against theft |
| 12/09/1998 | EP0882278A1 An alarm system |
| 12/02/1998 | EP0881610A2 Alarm systems |
| 12/02/1998 | EP0880764A1 Multi-signature fire detector |
| 12/02/1998 | EP0772855B1 Fire detection device with disruptive parameter correction |
| 12/02/1998 | CN2299351Y Electronic recording tag for mine gas monitoring system |
| 12/02/1998 | CN1200488A Electronic self-locating system and method |
| 11/25/1998 | EP0880117A2 Building security system |
| 11/25/1998 | CN1199881A Serial defense area expander |
| 11/19/1998 | WO1998052108A1 Data transfer apparatus |
| 11/19/1998 | CA2237671A1 Electronic self-locating system and method |
| 11/18/1998 | EP0877995A1 Method for dynamically adjusting fire detection criteria |
| 11/17/1998 | US5838242 Fire detection system using modulation ratiometrics |
| 11/17/1998 | US5838234 Method and device for sensing, identifying and protecting goods, particularly from theft |
| 11/17/1998 | US5838231 For detecting acoustic vibrations in a monitored object |