Switch device

A switch device comprising:

• an operation unit comprising a first switch, a second switch, a first resistor, a second resistor, and a first terminal;
• and
• a control unit comprising a second terminal coupled to the first terminal, the control unit being configured to perform predetermined control based on an operation state of each switch of the operation unit,
• wherein a series circuit of the first switch and the first resistor is coupled between the first terminal and a ground,
• wherein a series circuit of the second switch and the second resistor is coupled between the first terminal and the ground,
• wherein the control unit monitors a potential of the first terminal which changes in response to on/off of the first and second switches via the second terminal, and determines the operation state of each switch based on the potential,
• wherein at least one of a movable contact and a fixed contact constituting a contact of the first switch is a gold contact of which a contact surface is made of gold, and
• wherein at least one of a movable contact and a fixed contact constituting a contact of the second switch is a carbon contact of which a contact surface is made of carbon.