There is provided an analysis device including one or a plurality of analysis units each including a unit main body that is a primary subject of an analysis operation, a first power supply configured to supply power to the unit main body, a unit controller configured to operate the unit main body according to a control signal input from an outside, and switch a connected state/disconnected state between the first power supply and the unit main body, and a second power supply configured to supply lower-voltage power to the unit controller than the first power supply (63); and a central controller configured to send a control signal to the unit controller of each of the one or plurality of analysis units.