The IM24V interface module makes it possible to control the tightening system via a 24 V interface or to output 24 V status signals from the tightening system. The IM24V module is inserted into a slot on the KE 350 or KE350G IL communication units or the SE352M control unit. The module provides 10 inputs and 13 outputs. The outputs are short circuit-proof and protected against reverse polarity. The IM24V complies with DIN 19240.