Provided are embodiments for an alarm system including one or more sensors configured to detect an alarm condition, and one or more client stations. The alarm system also includes a controller of a security panel operably coupled to the one or more client stations, and a central station operably coupled to the control panel over a network, wherein the central station is configured to initiate a conference between the one or more client stations and the central station. Also provided are embodiments for a method to establish an audio/video link to a central monitoring station.

Systems and techniques are described for a sensor designed to connect to and monitor devices in an ecosystem. In some implementations, a system monitors a property that includes the sensor configured to generate sensor data reflecting an attribute of the property. The sensor includes a host board that generates the sensor data and a core board connected to the host board. The core board identifies a type of the host board and communicates with a monitor control unit. The monitor control unit receives a request for firmware associated with the type of the host board from the sensor. In response, the monitor control unit accesses the firmware and transmits the firmware to the sensor. The core board of the sensor receives the firmware and stores the firmware. The core board receives the sensor data from the host board and transmits the sensor data to the monitor control unit.

A physical security system may define sites associated with cameras. Sites may be added as a child site off of a parent site to form a site family. Once set up, ranked user and group privileges on the parent site may be pushed to the child sites, and controlled by the parent site. The child sites may still define local users and groups so that the child site may operate if there is a loss of connectivity to the parent site.

A fire detector is connected to a loop transmission path connected to a receiver. When the loop transmission path is normal, a communication connection is made from a transmitting unit to the fire detector to monitor fire. When a break fault occurs in the loop transmission path, a break monitoring control unit turns switching circuit units ON to connect a termination of the loop transmission path to the transmitting unit. To the loop transmission path, a relay detects a current normal direction at normal and a current reverse direction at the time of occurrence of a break for transmission to the receiver. When a break occurs in the loop transmission path, a break section determining unit of the receiver determines, as a break section, a section in which the current normal direction detected by a plurality of the relays is changed to the current reverse direction.

Systems and techniques are described for a sensor designed to connect to and monitor devices in an ecosystem. In some implementations, a system monitors a property that includes the sensor configured to generate sensor data reflecting an attribute of the property. The sensor includes a host board that generates the sensor data and a core board connected to the host board. The core board identifies a type of the host board and communicates with a monitor control unit. The monitor control unit receives a request for firmware associated with the type of the host board from the sensor. In response, the monitor control unit accesses the firmware and transmits the firmware to the sensor. The core board of the sensor receives the firmware and stores the firmware. The core board receives the sensor data from the host board and transmits the sensor data to the monitor control unit.

An intrusion detection system and intrusion detection method are provided. The intrusion detection system includes multiple IoT devices and a central control device. The central control device is configured to obtain multiple sensing pairs from a paired combination of the multiple IoT devices; create a sensing-pair list including the multiple sensing pairs and features of each sensing pair; obtain multiple first pairs whose features satisfy a first feature condition from the sensing-pair list; dynamically schedule the multiple IoT devices to send and receive signals in a time sharing fashion to obtain a first sensing signal of each first pair; and based on a paired node of the multiple first pairs, count a first status code and a second status code of the multiple first pairs to which each paired node belongs, to determine whether any intrusion condition occurs.