Abstract: The present invention aims to provide a method by which a user recognizes that firmware of a control device related to a remote monitoring system is being updated. In a remote monitoring system including a mobile terminal operated by a user, a server that communicates with the mobile terminal, and the control device that communicates with the server, the mobile terminal communicates with the control device through the server, and the server knows start and completion of an update of firmware of the control device by communicating with the control device. In a case where an operating instruction to the control device is issued from the mobile terminal while the firmware of the control device is being updated, the server notifies the mobile terminal that the firmware of the control device is being updated.

Abstract: Provided is a controller capable of making a user aware of a consumption amount of electricity at a preferred time. A home controller (100) includes a communication interface (105) configured to receive an electrical power consumption of a plurality of devices (200A to 200E), a memory (101) configured to store changes in the electrical power consumption of the plurality of devices (200A to 200E), and a processor (110) configured to determine whether or not a change amount or a change rate in the electrical power consumption is greater than a predefined range for each of the plurality of devices (200A to 200E) and output information indicating the electrical power consumption of a device having the change amount or the change rate in the electrical power consumption greater than the predefined range.