The universal interface has 2, 4 or 12 channels which can be parametrised as inputs or
outputs with the ETS software. Conventional push-buttons, auxiliary contacts, LEDs and the
electronic relay ER/U can be connected. The connecting cables can be extended up to 10 m.
The contact scanning voltage and the supply voltage for the LEDs are made available by the
device, the series resistors for the LEDs are integrated.