Abstract: Image surveillance and reporting technology, in which an event that is indicative of potential physical activity within an area corresponding to a location of a camera unit is detected. In response to detection of the event, the camera unit is controlled to capture one or more images of the area corresponding to the location of the camera unit. The one or more images captured by the camera unit are analyzed to determine whether the one or more images include image data that is indicative of relevant physical activity within the area corresponding to the location of the camera unit. The one or more images are handled based on the determination of whether the one or more images include image data that is indicative of relevant physical activity within the area corresponding to the location of the camera unit.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are disclosed for implementing a smart dehum circuit that powers a chime which outputs audio in response to detection of a trigger event by a video doorbell. The circuit includes a detector circuit configured to generate a power signal in response to determining that an output voltage signal of a first circuit exceeds a threshold voltage. The circuit also includes a microcontroller coupled to the detector circuit. The microcontroller is configured to generate a chime power signal based on the power signal of the detector circuit. The chime power signal is generated to power the chime in response to detection of the trigger event by the video doorbell.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, for using a drone to identify a wireless network problem and initiate performance of one or more operations or actions that address the wireless network problem, the drone comprising a processor and a storage device, the storage device storing instructions that, when executed by the processor, cause the processor to perform operations comprising receiving, by the drone, an instruction to analyze a wireless network of a property, responsive to the instruction to analyze the wireless network, traveling, by the drone, to one or more zones of the property, determining, by the drone and based on an analysis of one or more characteristics of the wireless network, that a wireless network problem exists, and based on the determination that the wireless network problem exists, performing, by the drone, one or more operations directed to addressing the wireless network problem.

Abstract: Techniques are described for configuring a monitoring system to assist users during a detected emergency condition at a property. In some implementations, sensor data from one or more sensors that are located at the property are obtained by a monitoring system that is configured to monitor the property. A determination that there is an emergency condition at the property is made by the monitoring system based on the sensor data, determining. A location of a person inside the property is determined by the monitoring system based on the sensor data. A first path to the person and a second path to guide the person away from the emergency condition are determined by the monitoring system. The first path to the person and the second path to guide the person away from the emergency condition are navigated by a computing device of the monitoring system.

Abstract: Controller technology, in which data specifying a user preference relating to an environmental parameter for a property is received. Based on data collected by a monitoring system, a location of one or more users within the property is identified. Environmental condition data for the property is accessed, the environmental condition data including environmental condition data for the location of the users within the property and other unoccupied locations within the property. The environmental condition data for the property is analyzed with respect to the preference relating to the environmental parameter for the property. Based on the analysis of the environmental condition data for the property with respect to the preference relating to the environmental parameter for the property, a setting for at least one component of an HVAC system is determined. The at least one component of the HVAC system is controlled according to the determined setting.

Abstract: An electronic monitoring system is described that receives data from a particular monitoring system, receives data from multiple other monitoring systems, analyzes data received from the particular monitoring system irrespective of data received from the multiple other monitoring systems, based on the analysis, determines whether one or more events occur at the particular environment, and in response to determining that a particular event occurs at the particular environment, evaluates the particular event against a set of rules, selects, based on the evaluation results, a particular subset of the multiple other monitoring systems to serve as a cooperative monitoring network, assesses data received from the particular subset of the multiple other monitoring systems, based on the assessment, tracks, in connection with the particular event, events detected by the particular subset of the multiple other monitoring systems, and handles the particular event based on the tracked events.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, for detecting water leaks and mitigating the damage caused by the detected leaks. The system may include a processor and a storage device storing instructions that, when executed by the processor, cause the processor to perform operations. The operations may include obtaining sensor data that is generated by one or more flow rate sensors located at a property, obtaining status data that is generated by one or more connected water shutoff valves located at the property, determining, based on (i) the obtained sensor data and (ii) the obtained status data whether a water leak has been detected at the property, and in response to determining, based on (i) the obtained sensor data and (ii) the obtained status data, that a water leak has been detected at the property, initiating performance of one or more water damage mitigation operations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for or regaining connectivity between devices. One of the methods includes: determining, using network radio data from a network radio for a device that was connected to another device using the network radio, that the device is disconnected from the other device; in response to determining that the device is disconnected from the other device using the network radio, determining configuration data i) for the device ii) that indicates changes to data on the device to cause the device to increase a likelihood of regaining connectivity with the other device using the network radio; and using the configuration data to cause the device to change the data on the device to increase the likelihood of regaining connectivity with the other device using the network radio.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, are disclosed. A system performs operations including receiving sensor data from a sensor of a property monitored by a monitoring system, and based on the sensor data, determining a first event and a second event that have occurred at the property. The operations include determining that the monitoring system is not able to communicate with an outside network, and classifying the first event as a high priority event and the second event as a low priority event. The operations include determining that a mobile device is able to receive data from the monitoring system; and providing, to the mobile device, data indicating the first event and an instruction to transmit the data indicating the first event to a server upon the mobile device being able to communicate with the outside network.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for enhanced property access with video analytics. In some implementations, images of a first area captured by a camera are obtained. A number of persons in the first area is determined from the images. Data indicating one or more unique identifications is received. A number of persons who are authorized to access a second area are determined. Access is provided to the second area.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for an ultrasonic sensor. One of the systems includes a first ultrasonic assembly that includes a first waveguide formed by a first monolithic body, and a first ultrasonic transducer mounted to the first waveguide, wherein the first monolithic body includes a first mounting surface adapted to couple to the first ultrasonic transducer and a first coupling surface adapted to couple to an outer surface of a pipe; and a second ultrasonic assembly that includes a second waveguide formed by a second monolithic body, and a second ultrasonic transducer mounted to the second waveguide, wherein the second monolithic body includes a second mounting surface adapted to couple to the second ultrasonic transducer and a second coupling surface adapted to couple to the outer surface of the pipe.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for adjusting an indoor humidity at a property. One of the methods includes determining an estimated outdoor temperature in an area around a property; determining, using the estimated outdoor temperature, a target indoor humidity for the property; accessing data about the property; predicting, using the data about the property, whether an indoor humidity of the property will likely change within a threshold time period; determining, using the target indoor humidity and the prediction whether the indoor humidity of the property will likely change within the threshold time period, whether to adjust the indoor humidity of the property; and in response to determining to adjust the indoor humidity of the property, controlling, using the target indoor humidity, humidity equipment at the property to cause an indoor humidity at the property to move toward the target indoor humidity.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are disclosed for implementing a power sequencing technique implemented using circuitry for powering a chime that outputs audio in response to a trigger event. An integrated circuit of a video doorbell receives a first power signal from a source and generates a half-wave pulse for a power sharing sequence of the circuit, based on the first power signal. The generated half-wave pulse is interrupted and the circuit generates a second power signal that causes the chime to initiate outputting the audio. The second power signal corresponds to the first power signal and is generated in response to interrupting the half-wave pulse. The circuit resumes generating the half-wave pulse to power the chime using the power sharing sequence after causing the chime to initiate outputting the audio using the second power signal.

Abstract: Techniques are described for detecting and handling unauthenticated commands in a property monitoring system. In some implementations, a monitoring system may include sensors located throughout a property, a monitoring control unit, and an input device. The monitoring control unit may be configured to receive data collected by the sensors, as well as an input command detected by the input device. For an input command that does not include authentication information, the monitoring control unit may generate property state information based on the sensor data, then analyze the property state data and the input command against one or more rules that relate to authorization of unauthenticated commands. Based on the analysis, the monitoring control unit may determine whether to perform the action corresponding to the input command or whether to perform another action, for example, generating and providing a notification or authorization request to a user.

Abstract: A circuit is described for powering a chime that outputs audio in response to detection of an entity by a video doorbell. The circuit includes a power source for generating a first signal. A first switch is coupled to the power source. The first switch is configured to provide, in response to the first signal, a first direct-current (DC) voltage signal during a first operating mode where the video doorbell receives an input that triggers actuation of the chime in response to detection of the entity. A second switch is coupled to the power source and the first switch. The second switch is configured to provide, in response to the first signal, a second DC voltage signal during a second operating mode where the chime outputs the audio in response to the input that triggers actuation of the chime in response to detection of the entity.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for selecting a video quality. One of the methods includes: determining, for a repeating time range of a video with a first video quality, a frequency with which one or more portions of the video were accessed, each portion for a corresponding one of one or more past instances of the repeating time range; selecting, for the repeating time range and using the frequency with which the portion of the video for the repeating time range was accessed, a second video quality from two or more video qualities that includes the first video quality; and storing, in memory, one or more additional portions of the video i) captured by a camera during future instances of the repeating time range ii) at the second video quality.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for robotic building inspection. In some implementations, one or more data objects that specify one or more requirements for a property are accessed. Sensor data of the property is obtained using a drone or other robotic device that has one or more sensors. A map is generated from the sensor data. An issue with the property is identified by comparing the map with the one or more data objects. A notification is generated based on the comparison where the notification includes an indication of the issue. The notification is transmitted to a computing device of a user.

Abstract: A monitoring system is configured to monitor a property. The system includes a sensor that is configured to generate sensor data that reflects an attribute of the property. The system further includes an HVAC system that is configured to generate and provide conditioned air to the property and that is configured to generate HVAC system data that reflects an attribute of the HVAC system. The system includes a monitor control unit that is configured to determine that the HVAC system is likely malfunctioning. The control unit is configured to receive the sensor data. The control unit is configured to determine that the HVAC system is likely operating correctly. The control unit is configured to determine a cause of the HVAC system transitioning from likely malfunctioning to likely operating correctly. The control unit is configured to update a model that is configured to identify causes of HVAC system malfunctions.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a non-transitory computer storage medium, for receiving user-defined routes, each user-defined route including a tripwire of multiple tripwires and a direction, where each user-defined route includes an action of multiple actions executed by a sub-system of a home monitoring system, detecting a first signal at a first tripwire including a first direction, determining a set of user-defined routes including the first tripwire and the first direction, detecting a second signal at a second tripwire including a second direction, determining a particular user-defined route of the set of user-defined routes including the first tripwire and the first direction and the second tripwire and the second direction, determining an action executed by a sub-system of the home monitoring system for the particular user-defined route traversed by a user, and triggering execution of the action based on the second signal at the second tripwire.

Abstract: Methods, systems, and apparatus for periodic water leak detection are disclosed. A method includes obtaining, using a water meter, water meter data representing the occurrence of water usage events at a property; determining, based on the water meter data, a periodicity of water usage events; determining that the periodicity of water usage events satisfies water leak criteria; and based on determining that the periodicity of water usage events satisfies water leak criteria, determining that a water leak exists at the property. Determining the periodicity of water usage events can include determining an average time between a start of sequential water usage events; and determining that the periodicity of water usage events satisfies water leak criteria can include determining that the average time between the start of sequential water usage events is less than a threshold time between the start of sequential water usage events.