Devices, methods, and systems for a self-testing hazard sensing device are described herein. One device includes a sensor, a wire dipped in a material, a controller configured to provide a current to the wire to heat the material and generate aerosol and/or carbon monoxide, and an airflow generator configured to provide the aerosol and/or carbon monoxide to the sensor. The controller configured to determine whether the self-testing hazard sensing device is functioning properly using the aerosol and/or carbon monoxide provided to the sensor.

Devices, methods, and systems of a self-testing duct environment detector are described herein. One self-testing duct environment detector system includes a first portion to be mounted outside of a duct, the first portion having a detector housing with a space therein, the space having a detector with a sensing chamber and a self-testing sensing apparatus therein, wherein the self-testing sensing apparatus determines whether airflow through the detector housing is above a threshold and a second portion and third portion each configured to extend into the duct, wherein the second portion has at least one inlet aperture formed therein and wherein the third portion has at least on outlet aperture therein.

Methods, devices, and systems for a flow condition testing procedure of an aspirating smoke detector device are described herein. One device includes a blower to draw gas into an aspirating smoke detector device, a sensor, a memory, and a processor to execute executable instructions stored in the memory to determine, via the sensor, a flow rate of the gas into the aspirating smoke detector device, determine a flow condition based on the determined flow rate, and cause the flow condition to be displayed.

Devices, systems, and methods for event input device testing are described herein. In some examples, one or more embodiments include a controller comprising a memory and a processor to execute instructions stored in the memory to cause a first event input device of a group of event input devices to perform an automated test process, and determine whether a second event input device of the group of event input devices has detected a hazard event while the first event input device is performing the automated test process.

Methods, systems, and apparatus, including computer programs encoded on a storage device, for using a drone to test a sensor. In one aspect, the method includes actions of detecting a message (i) broadcast by the drone and (ii) indicating that the drone is going to administer a test of a sensor, determining, by the monitoring system and based on the message and (i) sensor data generated by the sensor in response to the administration of the test, by the drone, within a predetermined period of time of the message or (ii) a lack of sensor data generated by the sensor in response to the administration of the test, by the drone, within a predetermined period of time of the message, whether the sensor is functioning properly, and in response to a determination that the sensor is not functioning properly, storing data indicating that the sensor is not functioning properly.

Devices, systems, and methods for self-testing event devices of a building alarm system are described herein. One mobile device includes a user interface, a memory, and a processor configured to execute executable instructions stored in the memory to: generate, a list of event devices of an alarm system that are available for testing, providing a device selection tool that allows a user to select a number of event devices from the list of event devices, and providing a self-test initiation tool that generates an initiation message that is to be sent to the selected number of event devices.

Disclosed herein are apparatuses and methods for managing building pathway information. A building and/or security management system can detect, based on receiving input from multiple sensor devices, a possible safety issue in a first pathway to an egress of a building, determine, based on detecting the possible safety issue and based on information regarding other pathways in the building, a second pathway to the egress of the building, and indicate at least the second pathway to another system.

A service system and method using flying service equipment are disclosed. In the service system, flying service equipment such as a drone can be remotely piloted by an operator to perform activities such as installing, configuring, and testing distributed devices such as fire detection devices in a fire alarm system. The service system performs these activities upon distributed devices of a building management system. For this purpose, the service system includes a drone, and a service payload carried by the drone for performing the activities on the distributed devices.

A method of calibrating an optical detector includes positioning a calibration block relative to the optical detector and determining a first calibration point of the detector using the calibration block.

Devices, methods, and systems for verification of a visual inspection are described herein. One method for visual inspection verification of a fire alarm system having self-testing components includes using a visual inspection verification software mobile application on a mobile device, a technician selects one or more groups of fire alarm system components within areas of a building for visual inspection, wherein each self-testing fire alarm system component has an associated wireless beacon; and wherein each fire alarm system component having an associated wireless beacon emits a unique identifying signal which can be received by the mobile device when the technician moves the mobile device into a range corresponding to a visual distance of the technician to a particular fire alarm system component emitting the unique identifying signal to verify that a technician has been within the range corresponding to a visual distance of the technician to the particular component.