Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, for securing device data in response to an event. A method includes receiving an instruction to initiate execution of a user device data protection protocol after a determination by a monitoring unit that an event has occurred at a property, determining whether the user device is located at the property, and in response to a determination that the user device is located at the first location, displaying a prompt that asks if the user device data protection protocol should be canceled. The method also include actions of determining whether user feedback responsive to the prompt has been received by the user device within a predetermined amount of time, and in response to a determination that the predetermined amount of has expired without receiving user feedback, performing one or more data protection operations to protect user device data.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for group identification and monitoring. The methods, systems, and apparatus include actions of determining, using one or more first frames of a video sequence, that two people each of whom is depicted in at least one of the first frames satisfy a grouping criteria that indicates that the two people should be grouped for video analysis, determining, using one or more second frames of the video sequence at least some of which were captured after the one or more first frames and which depict at least one of the two people, that the two people satisfy a degrouping criteria that indicates that the two people should not be grouped for video analysis, determining that a physical distance between the two people violates a distance criteria, and providing an alert that the distance criteria is violated.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for surveillance with security camera drone. In some implementations, a determination is made to begin surveillance of an in-house service with a drone. A duration of the in-house service is determined. A location to land the drone during the in-house service is determined based on the duration of the in-house service. Landing of the drone is initiated at the determined location.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for user detection. In some implementations, a corresponding method includes obtaining an authorized user list including first identification information of an Ultra Wide Band (UWB) device; obtaining, from the UWB device, (i) location information of the UWB device at a property, (ii) directionality information of the UWB device, and (iii) second identification information of the UWB device; determining the first identification information of the UWB device matches the second identification information of the UWB device; determining the location information and the directionality information of the UWB device satisfy a predetermined authorization requirement for the property; and sending, to a control device of the property, an access signal that is configured to allow a user associated with the UWB device to access an area of the property.

Abstract: Systems and techniques are described for alerting individuals of HVAC system issues in their home. In some implementations, a monitoring system monitors a property that includes sensors located throughout the property and generates sensor data. A monitor control unit receives thermostat data from a thermostat that indicates activity of the HVAC system and temperature history of the property. The monitor control unit applies the thermostat and the sensor data to an HVAC model that is trained using past sensor data, past thermostat data, past errors of the HVAC system. The monitor control unit determines an error of the HVAC system from the HVAC model output. The monitor control unit determines an action for likely correcting the error of the HVAC system. The monitor control unit provides, for output, data identifying the error of the HVAC system and the action for likely correcting the error of the HVAC system.

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: Video monitoring and alarm verification technology, in which a first connection is established between a first device and a camera located in a monitored property associated with a user of the first device and image data captured by the camera is received over the first connection and at the first device. A determination is made to establish a second connection with a second device that enables sharing of the received image data with the second device and, in response to the determination, the second connection is established between the first device and the second device. The received image data is shared with the second device over the second connection and the second device is restricted from directly accessing image data captured by the camera located in the monitored property.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for automating bulk location-based actions in response to disaster events. A system obtains data defining zones related to different geographic locations and configures a set of preferences for each zone. One of the preferences is a command for responding to an event. The system detects a disaster event and determines that a location affected by the event is related to a zone defined at the system. The system obtains sensor data generated by a sensor in the zone that is connected to a monitoring system for the zone. The system generates an alert based on the sensor data and the command and provides the alert to a client device of an entity that manages properties in the zone. The alert provides an assessment of how the disaster event affects items at properties in the zone.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for monitoring an HVAC system. One of the methods includes receiving pressure data from one or more sensors monitoring a supply air duct of an HVAC system at a property that indicates a pressure in the HVAC system; determining, using the pressure data, that the pressure satisfies a pressure threshold for the HVAC system; and in response to determining that the pressure satisfies the pressure threshold, adjusting an actuator-controlled damper between the supply air duct and a return air duct or adjusting a fan speed of the HVAC system.

Abstract: In some implementations, a system can be used to selectively transmit bandwidth-intensive data over a cellular network based on dynamically determining resource availability over the cellular network. Monitoring system data to be transmitted to a remote server can initially be obtained by a component of a monitoring system. One or more network performance tests may be performed on a carrier network associated with the monitoring system. One or more network performance parameters can be computed based on results of the one or more network performance tests. The one or more network performance parameters can then be evaluated in relation to transmission requirements associated with the monitoring system data. A particular transmission strategy to use in transmitting the monitoring system data to the remote server can then be selected from among multiple transmission strategies. The monitoring system data is then transmitted to the server in accordance with the particular transmission strategy.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for state and event monitoring. In some implementations, images captured by a camera are obtained, the images depicting an area of a property. Two or more images of the images are provided to a machine learning model. An output of the machine learning model is obtained, the output corresponding to the two or more images. One or more potential states of the area of the property are determined using the output of the machine learning model, each state of the one or more potential states corresponding to an image in the two or more images. An action is performed based on the one or more potential states.

Abstract: In some implementations, a system can trigger an action to be performed at a property based on satisfaction of criteria related to location information and a connection status of a mobile computing device. Location information of the mobile computing device relative of a pre-defined geographic region including at least a portion of the property is initially obtained. A connection status of the mobile computing device for a short range wireless connection with a communication-enabled device within the property is then obtained. Criteria for an action at the property is then determined to be satisfied by the location information and the connection status of the mobile computing device. The action is finally triggered to be performed at the property in response to determining that criteria for the action is satisfied.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, for identifying one or more water dispensing appliances that are currently using water. In one aspect, the method includes actions of obtaining a dispensing appliance signature, obtaining water consumption data that is based on first sensor data from a first sensor that is installed at the property, identifying a particular water dispensing appliance from among multiple different water dispensing appliances located at the property based on an analysis of (i) the water dispensing appliance signature and (ii) the water consumption data, and responsive to identifying the particular water dispensing appliance located at the property based on an analysis of (i) the water dispensing appliance signature and (ii) the water consumption data, generating output data based on the one or more particular water dispensing appliances that were identified.

Abstract: Methods, systems, and apparatus for drone-assisted sensor mapping are disclosed. A method includes detecting a sensor in a detection area of a drone; based on detecting the sensor in the detection area of the drone, detecting the drone in sensor data captured by the sensor; determining a detection area of the sensor based on movement of the drone after the drone is detected; and determining a destination for the drone based on the detection area of the sensor. The method may include mapping boundaries of the detection area of the sensor to a map of an area where the sensor is located. The sensor can be a passive infrared sensor, an active infrared sensor, a radar sensor, a sonar sensor, a time of flight sensor, a structured light sensor, or a lidar sensor.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for integrating a monitoring system with one or more air quality sensors. The method includes receiving data indicating a level of volatile organic compounds within an area, determining an increase in the level of volatile organic compounds within the area, receiving video data that shows the area, detecting, from the video data, a new item of furniture within the area, sending a notification that indicates an increase in the level of volatile organic compounds is likely caused by the new item of furniture.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a sensor that is configured to generate sensor data that reflects an environmental condition of the property and an electrical monitoring device coupled to an electrical cord that provides power to an electrical device located at the property. The electrical monitoring device is configured to generate electrical data that reflects electricity that flows through the electrical cord. The monitoring system includes a monitor control unit that is configured to: receive, from the sensor, the sensor data; receive, from the electrical monitoring device, the electrical data; and analyze the sensor data and the electrical data. The monitor control unit is configured to: based on analyzing the sensor data and the electrical data, determine a status of the electrical device; and based on the status of the electrical device, perform a monitoring system action.

Abstract: Systems and techniques are described for gathering information on the health of individuals trapped in an accident to provide actionable information to a first responder system. In some implementations, a monitoring system monitors a property that includes sensors located at the property and generate first sensor data. A monitor control unit receives the first sensor data and generates an alarm event for the property based on the first sensor data. Based on generating the alarm event for the property, the monitor control unit dispatches an autonomous drone. The autonomous drone is configured to navigate the property. Using an onboard sensor, the autonomous drone generates second sensor data. Based on the second sensor data, the autonomous drone determines a location within the property where a person is likely located. The autonomous drone provides, for output, data indicating the location within the property where the person is likely located.

Abstract: Alarm system technology, in which an alarm event is detected at a property monitored by an alarm system when the alarm system was set in an armed state. Based on detection of the alarm event, an alarm probability score that indicates a likelihood of the alarm event being an emergency situation is determined and the alarm event is handled based on the determined alarm probability score.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a thermal camera that is configured to generate a thermal image of the property. The monitoring system further includes a monitor control unit that is configured to receive, from the thermal camera, the thermal image. The monitor control unit is further configured to, based on the thermal image, determine a temperature of a portion of the property depicted in the thermal image. The monitor control unit is further configured to determine that the temperature of the portion of the property depicted in the thermal image satisfies a temperature threshold. The monitor control unit is further configured to, based on determining that the temperature of the portion of the property depicted in the thermal image satisfies the temperature threshold, select and perform a monitoring system action.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for monitoring air quality with multiple sensing devices. The methods, systems, and apparatus include actions of: obtaining first sensor data from a sensor that is not an air quality sensor, determining that the first sensor data satisfy a first air quality criterion, in response to determining that the first sensor data satisfy the first air quality criterion, obtaining second sensor data from an air quality sensor, determining that the second sensor data satisfy a second air quality criterion, and based on a determination that the second sensor data satisfy the second air quality criterion, activating an air quality device.