The present invention discloses a CO alarm for a battery type generator, comprising a MCU control unit U2, configured to analyze and process signals, which is in a deep sleep state when the generator is not running, and enters a sleep plus timing wake-up working state after the engine is running; a CO sensor detection unit U3 connected to the MCU control unit, configured to convert the CO concentration in the environment into a corresponding electrical signal and output to the MCU control unit U2 for processing; an alarm indication unit U4 connected to the MCU control unit, configured to give an alarm prompt for the CO concentration and an alarm failure prompt.

A flame detector including an ultraviolet emitter configured to emit ultraviolet light at a strike voltage less than or equal to approximately 230 volts. A method of manufacturing an ultraviolet emitter for use in a flame detector, the ultraviolet emitter including a hermetically sealed, alkali rich, ultraviolet transmissive glass envelope, the method including: (a) wrapping an envelope exterior surface with a conductive material; (b) performing a first injection of at least one non-radioactive gas into the glass envelope at a first pressure; (c) applying a voltage bias to the glass envelope; (d) baking the hermetically sealed, alkali rich, ultraviolet transmissive glass envelope at a baking temperature for a baking duration of time; (e) cooling the hermetically sealed, alkali rich, ultraviolet transmissive glass envelope to a desired temperature; and (f) performing a second injection of at least one non-radioactive gas into the glass envelope at a second pressure.

An apparatus is provided for providing simulated smoke. The apparatus comprises a reservoir including a reservoir port, and a bladder disposed in the reservoir. The bladder can be deflated to cause a fluid substance to flow through the reservoir port into the reservoir to fill the reservoir with the fluid substance to generate smoke. The bladder can be inflated to cause smoke to flow out of the reservoir through the reservoir port to provide simulated smoke.

Methods, devices, and systems for an unmanned system (US) for smoke detector testing are described herein. In some examples, one or more embodiments include a test kit, a processor, and a memory having instructions stored thereon which, when executed by the processor, cause the processor to perform a test procedure on a projected beam smoke detector in a facility using the test kit and communicate a result of the test procedure to a smoke detector network associated with the facility.

The system includes an active unit, such as a detector unit, which has a processor, a network port for connection to a central control unit, and an optical data input port. The processor is arranged to enable the optical data input port on receipt of an enable signal received by the active unit from the central control unit via a network.

A method of operating a sensing component for sensing a magnetic field to determine a state of an access point having a first component and a second component that are separable from each other to create an opening and wherein a magnet is mounted on one of the first or second components of the access point, wherein the method comprises: operating the sensing component to sense a magnetic field in multiple dimensions to produce a sample representation of the sensed magnetic field, wherein the sample representation is a multi-dimensional representation and determining whether the sample representation is in a pre-determined region about a reference representation that is representative of a state of an access point to determine that the sensed magnetic field corresponds to said state of the access point, wherein the pre-determined region comprises a circular cross-section.

A method of operating a sensing component for sensing a magnetic field to determine a state of an access point having a first component and a second component that are separable from each other to create an opening and wherein a magnet is mounted on one of the first or second components of the access point, wherein the method comprises: operating the sensing component to sense a magnetic field in multiple dimensions to produce a sample representation of the sensed magnetic field, wherein the sample representation is a multi-dimensional representation and determining whether the sample representation is in a pre-determined region about a reference representation that is representative of a state of an access point to determine that the sensed magnetic field corresponds to said state of the access point, wherein the pre-determined region comprises a circular cross-section.

Devices, systems, and methods for providing fire events pattern analysis and cross-building data analytics are described herein. One fire system maintenance system, includes a number of fire system detectors, a fire system control panel, and a gateway device all positioned within the facility, the gateway device having instructions to: collect fire system device health data associated with one or more fire or smoke detector devices and to send this fire system device health data to a remote device, the remote device having instructions to: analyze the collected fire system device health data to determine an event type for each device health event recorded in the collected data, predict future device health events, categorize the device health events based on their determined event type, and prioritize the categorized device health events based on the quantity of events categorized in each event type.

A device for testing smoke detectors comprises a barrel, an end-piece coupled to one end of the barrel and which is capable of covering at least a sensing area of a smoke detector, and a device body coupled to the opposite end of the barrel and which is capable of carrying a pressurized dispensing container having a smoke-simulating substance.

An object herein is to provide a fire alarm system which is capable of performing cable-deterioration diagnosis on a cable even if it is connected to a communication input type sensor. The fire alarm system includes: a sensor to which a communication signal to be used for detection is inputted intermittently; an input circuit unit for causing a current for measuring an impedance, to flow to the sensor constantly in a manner superimposed on the communication signal to be used for detection; a signal processor for measuring the impedance in a communication off-period of the communication signal; a storage in which a threshold value for the impedance is stored, the threshold value serving to determine deterioration of a cable connected to the sensor; and a controller for diagnosing, when the measured impedance exceeds the threshold value, that the cable connected to the sensor is deteriorated; to thereby perform cable-deterioration diagnosis.