194952 ⎘
Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation; Checking intermittently signalling or alarm systems of line circuits
Fire detection system diagnostic systems and methods
#2System and method for improving network connection reliability of IoT tracking and emergency response devices
#3Extracting the resistor-capacitor time constant of an electronic circuit line
#4Method for resetting life diagnosis alarm of a contact of a contactor
#5Resistor-capacitor sensor circuit
#6Testing of a network of hazard warning devices
#7Resistor-capacitor sensor circuit
#8Extracting the resistor-capacitor time constant of an electronic circuit line
#9Fault isolation locality
#10System and method for entry check-in protection
#11Inspection System and Method
#12Control and monitoring module
#13Hazard detector, test device for hazard detector, hazard monitoring system and method for testing a hazard detector
#14Methods and arrangements for alert message detection in low latency systems
#15Fire alarm loop calibration and fault location
#16Jamming detection method and device
#17Method and device for measuring a line resistance of control lines in hazard warning and control systems
#18Alarm system testing device
#19Method and control arrangement to secure an alarm system
#20Apparatus and method for detection and adaption to an end-of-line resistor and for ground fault localization
#21Redundant bus fault detection
#22Line isolators for isolating multiple faults in emergency systems
#23End-of-line capacitor for measuring wiring impedance of emergency notification circuits
#24System and method for synchronization of networked fire alarm panels
#25Testing device for hazard alarm systems
#26Alarm device
#27Methods and apparatus for controlling and testing a notification appliance circuit
#28Method and apparatus for ground fault detection
#29Server based distributed security system
#30Emergency warning system and method of installation
#31Active line termination module
#32Method and apparatus for authenticated on-site testing, inspection, servicing and control of life-safety equipment and reporting of same using a remote accessory
#33METHOD AND DEVICE FOR MONITORING DETECTOR LINE OF FIRE DETECTION SYSTEM FOR FAULTS
#34Testing a fire detector sensor
#35Dynamically switched line and fault detection for differential signaling systems
#36Active security system
#37Detecting faults on a spur wired alarm circuit
#38Building security system with site risk reduction
#39Behavior-deterring collar with emergency override