Controller, energy management systems, remote control method, and program

The present invention further improve the safety of the remote control to the home device. In A the energy management system 1, the controller 100 acquires an environment parameter representing the home environment. Controller 100, out-of-home terminal devices 40A, 40B, from 40C, receives an instruction to remotely control the air conditioning system 104 or the like installed in the home. The controller 100 transmits an instruction is accepted, the acquired environment parameters, whether to execute the processing corresponding to the received instruction inquiry. The controller 100, based on the response to the inquiry, to control the air conditioning system 104 or the like. .FIELD 1