Stand alone input/output module commonly usable to recorder and data logger

A stand alone input/output module which is commonly usable to a recorder and a data logger, the stand alone input/output module comprising:

• an input/output unit configured to achieve at least one of a function of acquiring a measurement signal from a measurement target and a function of outputting data;
• a base contact configured to enable the input/output module to stand alone vertically in cooperation with a base contact of a base when the input/output module is connected to the base, with a space being formed in a lower portion by the base contact of the input/output module and the base contact of the base when the input/output module stands alone vertically;
• and
• a plate-shaped rotational connector including a semicircular notch in lower right and left portions on the connection side with the base, the rotational connector being configured to be interlocked with the base contact of the base.

An input/output module which is commonly usable to a recorder and a data logger, the input/output module comprising:

• an input/output unit configured to achieve at least one of a function of acquiring a measurement signal from a measurement target and a function of outputting data;
• a power unit configured to supply an operation voltage to the input/output unit, the power unit comprising an insulated switching power source, and
• a connector unit configured to connect each of the recorder and the data logger to the power unit, the connector unit comprising a first connector which is connected to the insulated switching power source and a second connector which is not connected to the insulated switching power source,
• wherein
• the power unit is configured to use a voltage, which has been converted by the insulated switching power source from a power supply voltage, as an operation voltage when the first connector is connected to a base of the data logger and the power unit receives a power voltage supply via the base, and
• the power unit is configured to use a power supply voltage as an operation voltage, when the second connector is connected to the recorder and the power unit receives a power voltage supply from the recorder.