To prevent inputting of an erroneous command and to make a user easy to input a command.

The equipment control system (chair system) is constituted of an input device 1, a recognition control part 7, a control device 8, a massage machine 9, and the like. The input device is provided with a bone transmission voice vibration detecting part 3 detecting bone-transmission voice vibration transmitted through the skull and the like when a user utters a voice, and a signal recognizing part 5 judging whether a detected signal which is outputted from this bone transmission voice vibration detecting section 3 and amplified by an amplifier part 4 coincides with any of signal patterns previously registered or not. And since a command can be inputted by uttering a course number, a number of an experience time, and the like with voice, conforming to an indication of a menu displayed on a display part 6 of a display device 2 by a user, inputting an erroneous command can be prevented comparing with operating a switch and the like by touch.