# S2IOG2 versions

To check the S2IOG2 version which can be current, voltage or switch, look at the analogue PCB of the interface and use the table below to define the version.

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There are 3 identical channels. The table shows the element values for channel 1. The other channels shall have the same components in the corresponding locations.

Most of the interfaces on the market were produced as 0-20mA version.

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The positions of elements are shown below:

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