A voice command input device includes a first voice input unit, a second voice input unit, and a voice command identifier. The first voice input unit converts a voice into first voice command information, and outputs first identification information and the first voice command information. The second voice input unit converts a voice into second voice command information, and outputs second identification information and the second voice command information. The voice command identifier refers to the first identification information and the second identification information, and generates a control signal for controlling an operation target appliance based on the result of referring, the first voice command information, and the second voice command information.