Controller

1:

• A controller comprising:
• an identifying information storage storing unique identifying information;
• a non-contact communicator receiving, through radio communication, a control parameter indicating a control condition for a controlled device and identifying information for a controller that is to control the controlled device based on the control parameter;
• a control parameter storage storing the control parameter;
• a control signal generator generating a control signal that controls the controlled device based on the control parameter stored in the control parameter storage;
• an evaluator evaluating whether or not identifying information received by the non- contact communicator matches identifying information stored in the identifying information storage;
• and
• a writing controller writing to the control parameter storage of the control parameter received by the non-contact communicator;
• wherein:
• the writing controller writes, to the control parameter storage, the control parameter received by the non-contact communicator if the identifying information received through the non-contact communicator matches identifying information stored in the identifying information storage, and does not write, to the control parameter storage, the control parameter received through the non-contact communicator if the identifying information that is stored in the identifying information storage does not match the identifying information received through the non-contact communicator.