Various embodiments involving a smart-home device are presented. It may be determined that the power supply interface has ceased receiving power from the structure's wired electrical system. In response to determining that a power supply interface of the smart-home device has ceased receiving power from a structure's wired electrical system, a power loss indication may be stored that comprises a timestamp. A network connection may be determined to be available. A notification may be transmitted of information from the stored power loss indication to a remote server via the available network connection.