With inductive couplers, energy and data are transmitted contactlessly via an air gap. This makes mechanical plug contacts superfluous. If our bidirectional coupling system with IO-Link is used, the data can also be transmitted in both directions. Function=Uni IO-Link, signal form=unidirectional, transmission distance=0...5 mm, component=Base, connection=plug connector, M12x1 connector, 4-pin, rated operating voltage Ue=24 VDC, housing material=brass, ambient temperature=-5...55 °C, protection class=IP67, transmission rate=COM2 (38.4 kBaud), process data IN=11 bytes, process data OUT=0 bytes, SIO mode=no