| 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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| 03/10/1998 | US5726633 Apparatus and method for discrimination of fire types |
| 03/05/1998 | DE19635664A1 Safety casing esp for danger alarm centre |
| 03/03/1998 | US5724023 Setting device for fire alarm system |
| 02/26/1998 | WO1998008205A1 Improvements relating to event detection and recordal |
| 02/26/1998 | WO1997045961A3 Water-tight, rigid container |
| 02/26/1998 | CA2264055A1 Improvements relating to event detection and recordal |
| 02/25/1998 | EP0825575A1 Smoke detection system |
| 02/25/1998 | EP0825573A1 Method and device for signal evaluation of a movement detector |
| 02/25/1998 | EP0824744A1 Advanced method of indicating incoming threat level |
| 02/24/1998 | US5721529 Individual smoke detector with stored range of acceptable sensitivity |
| 02/12/1998 | DE19632287A1 External signal generator mounting-dismounting method for building alarm system |
| 02/11/1998 | EP0823107A1 Secure remote sensor/transmitter array system |
| 02/11/1998 | EP0822908A1 Continuous input cell for data acquisition circuits |
| 02/11/1998 | EP0822907A1 Ac input cell for data acquisition circuits |
| 02/04/1998 | EP0822418A2 Sensor diagnostic apparatus and method thereof |
| 02/01/1998 | CA2209107A1 Intrusor |
| 01/28/1998 | EP0820553A2 Advanced embedded code hopping system |
| 01/27/1998 | US5712638 Multiple transmission channel group transmitter |
| 01/14/1998 | EP0818765A1 Multiple sensor detector and method of locally determining a potential alarm condition |
| 01/14/1998 | CN1037035C Smoke simulator for scattered light delectors, process, for regulating their sensitivity to smoke and use of the simulator |
| 01/13/1998 | US5708414 Sensitivity fault indication technique implemented in smoke detector system with self-diagnostic capabilities |
| 01/07/1998 | EP0817148A1 Security system comprising light-conducting means |
| 01/07/1998 | EP0815459A1 Circuitry and process for testing non-intermittent signal generators |
| 01/06/1998 | US5705988 Photoelectric smoke detector with count based A/D and D/A converter |
| 01/06/1998 | US5705982 Intrusion detection, register and indication apparatus |
| 01/06/1998 | US5705979 Smoke detector/alarm panel interface unit |
| 12/29/1997 | EP0814445A2 Automatic self-testing alarm system with supervision signal analysis |
| 12/18/1997 | WO1997048081A1 Random interval personal monitoring system |
| 12/17/1997 | EP0812449A1 Alarm sensor multiplexing |
| 12/16/1997 | US5699043 Individual smoke detector with sensitivity calibration and monitoring |
| 12/10/1997 | CN2270252Y Monitor for prohibition of coming in and going out door |
| 12/04/1997 | WO1997045961A2 Water-tight, rigid container |
| 12/03/1997 | EP0809922A1 Occupancy sensor and method of operating same |
| 11/25/1997 | US5691704 Practical and improved fire detector |
| 11/25/1997 | US5691703 Multi-signature fire detector |
| 11/25/1997 | US5691699 Security detector with optical data transmitter |
| 11/25/1997 | US5691697 Security system |
| 11/20/1997 | WO1997043741A1 Event detection device |
| 11/18/1997 | US5689233 Emergency information offering system |
| 11/18/1997 | CA2054467C Intrusion alarm sensing unit |
| 11/11/1997 | US5686896 Low battery report inhibitor for a sensor |
| 11/11/1997 | US5686885 Sensor test method and apparatus |
| 11/04/1997 | US5684458 Microwave sensor with adjustable sampling frequency based on environmental conditions |
| 10/28/1997 | US5682134 Method of operating a device for monitoring the interior of an automotive vehicle |
| 10/28/1997 | US5682131 Retractable tamper resistant annunciator |
| 10/21/1997 | US5680112 Wireless audible indication system with battery status indicator |
| 10/21/1997 | US5680096 Process and apparatus for monitoring a vehicle interior |
| 10/16/1997 | WO1997038406A1 Fire detector silenceable low battery pre-alarm |
| 10/15/1997 | CN1162160A Circuit for monitoring light siganal |
| 10/07/1997 | US5675150 Active IR intrusion detector |
| 09/30/1997 | US5673027 Smoke detector, adjustment apparatus and test apparatus for such a smoke detector |
| 09/23/1997 | US5671159 Fire detecting apparatus |
| 09/23/1997 | US5670946 Smoke detector sensitivity testing apparatus |
| 09/23/1997 | US5670937 Line monitor for two wire data transmission |
| 09/17/1997 | EP0772837A4 Checkout lane alert system and method for stores having express checkout lanes |
| 09/04/1997 | WO1997032288A1 Process and system for flame detection |
| 09/04/1997 | DE19607607A1 Activation of movement alarm using at least one IR sensor giving one electric signal |
| 09/03/1997 | EP0793154A1 Fail safe system |
| 08/27/1997 | EP0792032A1 Network restoration method |
| 08/27/1997 | CN2261050Y Indoor alaming device capable of manually identified and controlled |
| 08/24/1997 | CA2193150A1 Network restoration method |
| 08/20/1997 | CN2260347Y Secret code theft proof alarming device |
| 08/19/1997 | US5659316 Signal evaluation circuit for a motion detector |
| 08/19/1997 | US5659292 Apparatus including a fire sensor and a non-fire sensor |
| 08/14/1997 | DE19639157A1 Acoustic siren for intruder alarm system |
| 08/14/1997 | DE19606896A1 Light signals setting and monitoring circuit, esp. for railway operations |
| 08/06/1997 | EP0788082A2 Fire alarm system with smoke particle discrimination |
| 08/05/1997 | US5654691 Auxiliary backup device of burglary alarm system |
| 07/31/1997 | WO1997027571A1 Method for dynamically adjusting fire detection criteria |
| 07/30/1997 | EP0786751A2 Device for attaching the components of alarm systems |
| 07/30/1997 | EP0698262B1 Smoke detector sensitivity testing apparatus |
| 07/29/1997 | US5652566 Alarm system |
| 07/22/1997 | US5650762 Fire alarm system |
| 07/10/1997 | WO1997024703A1 An alarm system |
| 07/09/1997 | EP0782742A1 A control and registration system |
| 07/09/1997 | CN1154026A Method for signal degrade detection and cancellation in synchronous digital microwave system |
| 07/08/1997 | US5646598 Smoke detector with advanced safety features |
| 07/08/1997 | US5646591 Advanced method of indicating incoming threat level to an electronically secured vehicle and apparatus therefor |
| 07/03/1997 | DE19654566A1 Anti-theft monitoring device |
| 07/01/1997 | US5644293 Ground fault detection with location identification |
| 07/01/1997 | US5644071 Method for generating smoke aerosols and pyrolysis apparatus for carrying out the method |
| 06/26/1997 | WO1997022957A1 Event detection device with fault monitoring capability |
| 06/26/1997 | DE19547163A1 Operation of danger alarm corresp. to gas condition with at least one sensor system |
| 06/25/1997 | EP0780821A2 Radio frequency controlled system for testing emergency lighting units |
| 06/25/1997 | EP0715747B1 Process for generating smoke aerosols and pyrolysis device for carrying out said process |
| 06/22/1997 | CA2191688A1 Radio frequency controlled system for testing emergency lighting units |
| 06/17/1997 | US5640143 Occupancy sensor and method of operating same |
| 06/17/1997 | US5640140 Alarm processing apparatus |
| 06/11/1997 | EP0777895A1 Self-contained, self-adjusting smoke detector and method of operating it |
| 06/11/1997 | CN1151563A Pre-processor apparatus and method |
| 06/10/1997 | US5638043 Warning apparatus |
| 06/04/1997 | EP0568549B1 Improved gas sample chamber |
| 05/20/1997 | US5631629 Heartbeat communications |
| 05/15/1997 | DE19541363A1 Digital signal radio transmission method between mobile transmitter and receiver |
| 05/14/1997 | EP0772855A1 Fire detection device with disruptive parameter correction |
| 05/14/1997 | EP0772854A1 Vehicle security system |
| 05/14/1997 | EP0772851A1 Fire detector comprising an analog sensor |
| 05/14/1997 | EP0772837A1 Checkout lane alert system and method for stores having express checkout lanes |
| 05/07/1997 | EP0772171A1 Passive intrusion detector and its use |
| 05/06/1997 | US5627514 Fire detector and fire receiver |