Each individual channel can be used as kind of a relay. There are only output connections +channel and –channel (2-wire technology) for each channel. They can have any potential difference to each other channel, to the grounding or to the current supply. The channels can be operated as equivalent of an N-switch or between 2 load resistanc-es (in any combination). You can also connect several channels in series or in parallel, e.g. for switching high load currents or realizing logical circuits