Abstract: An apparatus can include a mounting plate comprising a housing with the mounting plate configured to be secured to a surface and configured to mount a home monitoring device. The apparatus can further include a power supply enclosed within the housing configured to receive AC power at an input, convert the AC power to a DC power, and output the DC power to the home monitoring device via two or more electrical contacts.

Abstract: A hazard detector device can comprise a base that defines a module receptacle and is configured to be secured to a surface and comprise a detector module configured to insert into the module receptacle and secure to the base. The detector module can include a battery, a hazard sensor powered by the battery, a memory configured to store data about the hazard sensor, and communication circuitry in communication with the memory and configured to communicate with an external device. A detector module can be replaced with another detector module without replacing the base.

Abstract: Disclosed are systems and methods that provide a novel framework for setting a first mode for a controller connected to a set of devices at a location; disabling communication capabilities of the controller with the set of devices for the time period, detecting information indicating modification to the devices, the detected information being based on activities performed respective to the devices during the time period; modifying operation of the controller, the modified operation comprising changing from the first mode to a second mode, the second mode enabling capabilities for the controller to test capabilities of at least the portion of devices; and causing interactions between the controller and each of the portion of devices in accordance with the second mode, the interactions involving executing the capabilities of the portion of devices and determining each capabilities status.